CBWNet @CBWNet
Working together to strengthen the norms against chemical and biological weapons. @IFSHHamburg @PRIF_org @jlugiessen ZNF @UniHH. More: https://t.co/RWkFNJilLO Joined March 2022-
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Call for Papers! We are accepting paper proposals for a CBWNet conference on 22-23 October 2025 in Frankfurt am Main, Germany, dealing with norm contestation and compliance. Send your submission until 31 August 2025 to [email protected] cbwnet.org/de/news/call-f…
🚨Out now! In a new research article in the Nonproliferation Review @DrAlexKelle and Malcolm R. Dando propose a behavioral arms control approach to strengthen the BWC and to overcome persistent biotechnology dual-use issues. Read the full paper here: doi.org/10.1080/107367…
🚨 New @cwccoalition report out now! @DrAlexKelle & Dr. Ralf Trapp contribute key insights on chemical terrorism and treaty compliance to the new report on the future of the #ChemicalWeaponsConvention. Read it here: cwccoalition.org/statements-rec…
🚨Out now! Our new working paper by @DrAlexKelle explores how states have contested the non-transfer vs. international cooperation norms in the #CWC. Read the full paper here: cbwnet.org/publications/w…
Don't forget to read @DrAlexKelle's working paper on chemical terrorism published by @CBWNet if you haven't already! tinyurl.com/chemterrorismk…
Don't forget to read @DrAlexKelle's working paper on chemical terrorism published by @CBWNet if you haven't already! tinyurl.com/chemterrorismk…
#BiologicalWeapons #Disinformation #Russia #1972BWC #UkraineRussiaWar️️ Instrumentalising Biological Weapons-Related Allegations: Russia’s Compliance Politics and the Norms Against Biological Weapons by @u_jako @CBWNet cbwnet.org/media/pages/pu… In 2022, Russia invoked the…
🚨New CBWNet Working Paper! Our new Working Paper by @u_jako explores the instrumentalization of BWC-related allegations and the influence of Russia's compliance-politics on the norms against biological weapons.📄Read the full paper here: cbwnet.org/publications/w…
🚨New CBWNet Working Paper! 🚨 Our newest working paper, "S&T developments with relevance for the CWC and the BWC," summarizes the wide-ranging presentations from the latest CBWNet expert workshop in Hamburg. Read the full paper here: cbwnet.org/publications/w…
Great honor for us to award Dr. Ralf Trapp the Cross of the Order of Merit of the Federal Republic of Germany for his role in the development of the Chemical Weapons Convention! And we are very happy to have @OPCW DG Arias with us.
In a new @CBWNet working paper @DrAlexKelle looks at state parties’ growing threat perceptions of chemical weapons within the CWC framework. cbwnet.org/news/out-now-c… 5/13
📢Last chance to apply! The CBWNet team at IFSH's Berlin office is hiring a Student Employee to support our research on chemical and biological weapons and assist with admin tasks for up to 10 h/week, starting in November. Apply by October 6 to join us! ifsh.de/en/institute/v…
🚨New CBWNet Working Paper! 🚨@DrAlexKelle explores chemical terrorism within the #CWC framework, examining states parties' evolving perception of the threat and how the @OPCW has addressed this issue alongside other priorities. 📄Read the full paper here: cbwnet.org/publications/w…
📢 The CBWNet team at IFSH's Berlin office is hiring a Student Employee! Support our research on chemical and biological weapons and take care of admin tasks with up to 10 hours/week, starting in November. ❗️ Apply by October 6th to join our team! ❗️ ifsh.de/en/institute/v…
🌍🧬 Check out the latest CBWNet working paper by @Moni_Chinchilla, @EHoffbergerP, @SannimariVeini, and Barry de Vries, exploring why #biosecurity and #biosafety should be seen as intertwined rather than separate concepts. Available here: cbwnet.org/publications/w…
#MiddleEast is crucial for achieving #CWC universalization & preventing chemical weapons reemergence. Establishing #WMDFreeZone could significantly advance these objectives, I argued as part of #EarlyCareers program at the 26th CW Demilitarization Con. #CWD2024 in London, UK.
🚨 Time's ticking! 🕒 Don't miss your chance to join the CBWNet team in Berlin as a Research Associate! 🔍 Role: Research Associate, 65% EG-13 TV-AVH 📍 Location: Berlin 📅 Deadline: 21.04.2024 🔗 Learn more & apply: cbwnet.org/news/vacancy-p…
📢 Calling all aspiring CBW experts and norm researchers! We're seeking a part-time Research Associate for the CBWNet project in Berlin🌍💼 🔍 Role: Research Associate, 65% EG-13 TV-AVH 📍 Berlin 📅 Deadline: 21.04.2024 🔗 More details & apply: ifsh.de/institut/stell…
Out now: Our newest working paper, "Chemical & Biological Terrorism and the Norms of the CBW Prohibition Regimes", summarizes the wide-ranging presentations held at the latest CBWNet expert workshop in Berlin. Read the full paper here: cbwnet.org/publications/w…

BWC Implementation Su... @BWCISU
7K Followers 2K Following Servicing the Biological Weapons Convention #1972BWC, supporting its implementation and promoting the peaceful uses of biology. 📍Based in @ODA_Geneva
Dr Filippa Lentzos @FilippaLentzos
7K Followers 482 Following Associate Professor of Science & International Security at King's College London critically analysing health security threats, biosecurity & biorisk management
OPCW @OPCW
39K Followers 2K Following Official account of the Organisation for the Prohibition of Chemical Weapons. #NobelPeacePrize laureate for 2013.
United Nations Instit... @UNIDIR
23K Followers 2K Following Building a more secure world • Director Robin Geiss
Dr. Brett Edwards @bwiedwards
3K Followers 4K Following still do some stuff here . new accounts starting over at https://t.co/Jq0N7ExOeJ https://t.co/Zu0H3XmdN3
Dr Alexander Ghionis @alexghionis
1K Followers 2K Following Research Fellow in Chemical and Biological Security | Harvard Sussex Program @SPRU | @UNIDIR | https://t.co/7G04vfzDlW #AI-Anxieties, #ChemicalWeapons & #OPCW
VERTIC @vertic_org
3K Followers 288 Following Founded in 1986. VERTIC supports the development, implementation and verification of international agreements as well as initiatives in related areas.
Mayra Ameneiros @MayraAmen
882 Followers 1K Following @IBBIS_bio Senior Fellow/@WHO HSI-TAG/@nextgenghs Board of Directors/Fellow 22': ELBI @JHSPH_CHS & ACONA @Harvard
Jean Pascal Zanders @JPZanders
2K Followers 681 Following #ChemicalWeapons #BiologicalWeapons #Disarmament Postings + retweets are NOT endorsements Member of Volt Europa @VoltEuropa and Volt France @volt_france
Yong-Bee Lim, PhD @FuturistYB
1K Followers 1K Following Personal Account. PhD @ScharSchool, #ELBI 2018 @JHSPH_CHS, @BUGSSlab. Associate Director, @scientistsorg #NATSEC #biosecurity #emergingtech #convergence
María Garzón Maceda @M_Garzon_Maceda
913 Followers 686 Following Let's talk WMD disarmament and non-proliferation | Women, Youth and Global South 🇦🇷 | Working at @UNIDIR on bio and chem | Usual caveats
The Pandora Report @PandoraReport
2K Followers 385 Following George Mason Biodefense: Where Science Meets Security
Global Partnership | ... @GPWMDofficial
1K Followers 378 Following Official account of the G7-led, 31 member Global Partnership Against the Spread of Weapons & Materials of Mass Destruction (CBRN Threat Reduction)
Matt Watson @BioAndBaseball
3K Followers 3K Following Husband, Father. Working on #bioeconomy & #biosecurity policy.
David Manheim @davidmanheim
9K Followers 2K Following Lecturer @TechnionLive, founder @alter_org_il, emeritus @superforecaster, PhD @PardeeRAND Optimistic on AI, pessimistic on humanity managing the risks well.
Oliver Meier @oliverm... @meier_oliver
3K Followers 1K Following Policy and Research Director @theELN. WMD elimination through arms control, disarmament, nonproliferation. Personal views only. RT/Fav≠endorsement.
Ulrich Kühn @DrUlrichKuehn
7K Followers 2K Following Hamburg | Arms | Control private account, professional affiliations @IFSHHamburg @CarnegieNPP zero engagement with anonymous accounts
CBW Events @CBWEvents
914 Followers 174 Following A project to create a record of events to enable/encourage understanding of how policies develop relating to chemical and biological warfare and its prevention.
Marc-Michael Blum @blumscientific
1K Followers 556 Following (Bio)chemist who tries to save the world from the bad guys messing around with chemical and biological weapons. Former Head OPCW Laboratory. Sometimes OF-4.
Gigi Gronvall @ggronvall
6K Followers 4K Following Professor, @JohnsHopkinsEHE, @JohnsHopkinsSPH, @JohnsHopkins; @JHSPH_CHS _1st_ Hopkins faculty to be a member of Baltimore's Marching Ravens
BB @ngnyf9tjyh
0 Followers 22 Following
Hữu Đào @Daohuu2810
0 Followers 39 Following
Future Development @futuredeva
652 Followers 3K Following We are project office of social changes, created in 2015 to develop social innovations using new methods and tools in the social sector #REThinkFuture #PPP #SDG
Dr Richard Hirschson @richardhirschs1
13K Followers 12K Following Physician, Intensive Care, pandemics, economics, libertarian, gambler. No financial/medical advice here. #H5N1 #BirdFlu #MPOX #DiseaseX #Stagflation #Gold
Meepis @sipeeM
99 Followers 395 Following
Matthew @SunOfAbramelin
19K Followers 880 Following
Emilia Johnson @JohnsonEmi62929
5 Followers 94 Following
CIVIX RY @CIVIX_ry
268 Followers 988 Following For the purpose of promoting and protecting human rights and fundamental freedoms. No juxtapositioning, no ad hominem. No ENDT.
Bailey Jones @BJones63349
1 Followers 76 Following
Sunny Dhingra @sunnydays110587
169 Followers 529 Following Perspicacity, Persistence, Prudence, Providence and Prayer makes me special. All views tweeted by me are personal and those retweeted are endorsed. estd: 1895
pramod @hardymobster
4 Followers 52 Following
Richard Weitz @RichardWeitzDC
942 Followers 812 Following Washington DC-based foreign-policy and defense analyst; latest book: The New China-Russia Alignment: Critical Challenges to U.S. Security (Praeger, 2022)
Tom @TomD_SEA
1K Followers 1K Following UNODC-WCO-INTERPOL Passenger & Cargo Control Programme @UNODC_WCO_CCP Regional Coordinator-Southeast Asia & the Pacific #IllicitTrafficking Perso views only RNE
Mar Hidalgo @ieee_mhidalgo
736 Followers 314 Following Analista Instituto Español de Estudios Estratégicos
Gene Raymond @raymo39223
215 Followers 2K Following Evil prevails when good men do nothing. we fight not just for our own interests but for those who come after us.
Alliance to Feed the ... @ALLFEDALLIANCE
675 Followers 724 Following ALLFED is an international organization committed to researching and planning solutions to be able to feed everyone in the event of a global catastrophe.
Bruce Stone @BruceStone4Real
3K Followers 6K Following Retired City Manager, Patriot 🇺🇸 Conservative, Father, Grandfather, Amateur Musician. 🚫DM, 🚫 Crypto.
Damian Honeyman @DamianHoneyman
248 Followers 1K Following Researching CBRNE threat detection and surveillance @KirbyInstitute | ICU RN | PhD Candidate | Father |
Allen @mansonfu_allen
3 Followers 76 Following
BioPrevail @BioPrevail
20 Followers 144 Following A One Health Security Innovation Initiative for Sustainable Laboratories
Angela Woodward 🌻 ... @AWoodward_NZ
449 Followers 629 Following Deputy Exec. Director, VERTIC / Mother / Māori / Knitter / Dachshund obsessive / Arms Control & Disarmament nerd / Law & Pols degrees / Views are my own She/her
Eirini Lemos Maniati�... @ILEMOU
1K Followers 2K Following Heading Arms Control, Disarmament and Non- Proliferation @ NATO. Fervent multilateralist! Retweets not endorsement.
Kaan Dadak @DadakKaan
4 Followers 339 Following
Maximilan Pfeiffer @MaxPfeiffer0408
0 Followers 6 Following
Giada @Giadadr_
1 Followers 77 Following
Perry Fellwock @FellwockPerry
4K Followers 5K Following Former NSA intelligence analyst, first whistleblower on abuses by NSA. CounterSpy magazine Founder. Author/Filmmaker against biothreats.
@Zahid @zahidrahid
161 Followers 2K Following CBRNe Committee In-Charge / CBRNe Events Protection Student.
April Arnold @aprilcarnold
274 Followers 803 Following
Ganesh Prasad @GaneshPras07
36 Followers 1K Following
jorge bernardi @jorgebernar
51 Followers 1K Following
Animesh Roul @Animesh_Roul
217 Followers 882 Following Terrorism, Violence, Arms Control, Disinformation, Geopolitics/South Asia. Founder/Author/Editor. Follow for insights and updates. RTs ≠ endorsements.
Szymon Bocheński @SzBochenski
149 Followers 285 Following Security Policy Professional working at PL MFA. Tweets are my own. RT = interest ≠ endorsement.
Cheng Tang @ChengTang14
12 Followers 127 Following
levy ndirangu @NdiranguLevy
103 Followers 588 Following A man who hang medical boots to take up millitary boots.
Seyed Mehdi Parsaei @ParsaeiSeyed
164 Followers 506 Following From Iran, Interested in International Relations
Renzo Driessen @mauritshuys
30 Followers 463 Following
Nicole @AmericanPeachh
11K Followers 9K Following Pharma Survivor | Border Crisis Witness | Truth Over Comfort | Healing Loudly | Savage, Unfiltered, America First ❤️🇺🇸
Huu Dao @HuuDao17
4 Followers 113 Following
CBRN guy @CBRNyoda
8 Followers 71 Following CBRN/hazmat geek with an eye for current affairs. Spent a while in this space. Filtering the myths…
NE @tkastw
79 Followers 866 Following
Osman YILMAZ @HakanBover79952
39 Followers 400 Following
Robert Petersen @RobertP48264217
163 Followers 1K Following
Yasemin Balci @yas_balci
265 Followers 534 Following National implementation @vertic_org, international disarmament and non-proliferation law, London admirer
karnakar Madishetti @karnakarMadish1
144 Followers 8K Following
BWC Implementation Su... @BWCISU
7K Followers 2K Following Servicing the Biological Weapons Convention #1972BWC, supporting its implementation and promoting the peaceful uses of biology. 📍Based in @ODA_Geneva
Dr Filippa Lentzos @FilippaLentzos
7K Followers 482 Following Associate Professor of Science & International Security at King's College London critically analysing health security threats, biosecurity & biorisk management
OPCW @OPCW
39K Followers 2K Following Official account of the Organisation for the Prohibition of Chemical Weapons. #NobelPeacePrize laureate for 2013.
United Nations Instit... @UNIDIR
23K Followers 2K Following Building a more secure world • Director Robin Geiss
Dr. Brett Edwards @bwiedwards
3K Followers 4K Following still do some stuff here . new accounts starting over at https://t.co/Jq0N7ExOeJ https://t.co/Zu0H3XmdN3
Dr Alexander Ghionis @alexghionis
1K Followers 2K Following Research Fellow in Chemical and Biological Security | Harvard Sussex Program @SPRU | @UNIDIR | https://t.co/7G04vfzDlW #AI-Anxieties, #ChemicalWeapons & #OPCW
UN Office for Disarma... @UN_Disarmament
37K Followers 898 Following Official account of the United Nations Office for Disarmament Affairs. High Representative for Disarmament Affairs: @INakamitsu.
VERTIC @vertic_org
3K Followers 288 Following Founded in 1986. VERTIC supports the development, implementation and verification of international agreements as well as initiatives in related areas.
UNODA Geneva @ODA_Geneva
7K Followers 484 Following UN Office for Disarmament Affairs @UNGeneva. Fostering dialogue & bolstering the global #disarmament community’s efforts to safeguard peace & security 🕊🇺🇳
Izumi Nakamitsu @INakamitsu
14K Followers 406 Following UN Under-Secretary-General and High Representative for Disarmament Affairs (@NakamitsuUN in Japanese)
Jean Pascal Zanders @JPZanders
2K Followers 681 Following #ChemicalWeapons #BiologicalWeapons #Disarmament Postings + retweets are NOT endorsements Member of Volt Europa @VoltEuropa and Volt France @volt_france
VCDNP @VCDNP
10K Followers 112 Following The Vienna Center for Disarmament and Non-Proliferation provides a platform for independent analysis & dialogue on nuclear issues.
Germany in the United... @GERMANYonUN
5K Followers 434 Following Germany for #InternationalOrder, the #UN and #ArmsControl, Federal Foreign Office Imprint and data privacy: https://t.co/OixFpBiB2B
PRIF @PRIF_org
7K Followers 2K Following PRIF – Peace Research Institute Frankfurt Bluesky: https://t.co/oiIKc44OVn Mastodon: https://t.co/2P4Ou5mkHn
The Pandora Report @PandoraReport
2K Followers 385 Following George Mason Biodefense: Where Science Meets Security
Global Partnership | ... @GPWMDofficial
1K Followers 378 Following Official account of the G7-led, 31 member Global Partnership Against the Spread of Weapons & Materials of Mass Destruction (CBRN Threat Reduction)
Oliver Meier @oliverm... @meier_oliver
3K Followers 1K Following Policy and Research Director @theELN. WMD elimination through arms control, disarmament, nonproliferation. Personal views only. RT/Fav≠endorsement.
CBW Events @CBWEvents
914 Followers 174 Following A project to create a record of events to enable/encourage understanding of how policies develop relating to chemical and biological warfare and its prevention.
Marc-Michael Blum @blumscientific
1K Followers 556 Following (Bio)chemist who tries to save the world from the bad guys messing around with chemical and biological weapons. Former Head OPCW Laboratory. Sometimes OF-4.
@CWCCoalition @cwccoalition
679 Followers 494 Following Global NGO coalition working with @OPCW to create world free of #chemicalweapons. RTs not necessarily endorsement
BioPrevail @BioPrevail
20 Followers 144 Following A One Health Security Innovation Initiative for Sustainable Laboratories
Stephan Klement 🇪�... @Amb_Klement_EU
3K Followers 176 Following EU Special Envoy for Non-proliferation and Disarmament and Special Adviser on Iran Nuclear Issue
Council on Strategic ... @CSRisks
3K Followers 1K Following CSR is dedicated to anticipating, analyzing and addressing core systemic risks to modern security.
Jaime Yassif @JaimeYassif
1K Followers 261 Following NTI | bio Vice President, biophysicist. Working to strengthen biotech governance, biosecurity, pandemic preparedness. Fmr US HHS & DoD, FAS, Open Phil
United Nations Office... @UN_OCT
26K Followers 925 Following @UN_OCT leads @UN work on #counterterrorism & countering/preventing violent extremism #PCVE through capacity building by #UNCCT, policy, coordination & advocacy
Tom Inglesby, MD @T_Inglesby
94K Followers 870 Following Dir @JHSPH_CHS. Formerly @WhiteHouse COVID Response Team. Epidemics, pub health, biosecurity, preparedness. https://t.co/fHp5lNZ7DS. Views expressed are my own.
Germany at OPCW @Germany_OPCW
106 Followers 129 Following The Permanent Representation of Germany to the OPCW
INTERPOL CBRNE @INTERPOL_CBRNE
11K Followers 304 Following Terrorism using CBRNE material threatens public health & safety, national security, economic & political stability. Preventing incidents is the highest priority
IBBIS @IBBIS_bio
123 Followers 130 Following Safeguarding modern bioscience and biotechnology so it can advance and flourish safely and responsibly.
UK Delegation to the ... @UK_OPCW
4K Followers 396 Following Official account of the #UK Delegation to the Organisation for the Prohibition of Chemical Weapons ( @OPCW )
Anja Dahlmann @adahlma
835 Followers 614 Following Head of Berlin Office & Researcher at @IFSHHamburg 🤖 PhD student @unihh, formerly @SWPBerlin. Also volunteer at @drkzentrum. she/her.
Mónica Chinchilla @Moni_Chinchilla
189 Followers 268 Following International Law Lecturer at @unav. Research on bio/chem Disarmament Law and WMD export controls. Research Associate at @CBWNet.
Yasmin Cürük 🔶 @Yasmewn
30 Followers 290 Following MSc Public Health student with an Economics background 📈 Student employee at CBWNet I took the 🔸10% Pledge (@10percentpledge) to give to effective charities!
Shizuka K @shizukakuramits
386 Followers 1K Following Currently @ArmsControlNow | fmr @UNIDIR WMD&Space Security GP | @UNITARHiroshima | @MIIS& @JamesMartinCNS | Views are my own | Mr.Childrenが好きです #Disarmabento
Bulletin of the Atomi... @BulletinAtomic
73K Followers 19K Following Providing news on nuclear risk, climate change, and disruptive technologies. We set the Doomsday Clock. Receive updates: https://t.co/oxjCouH59r
Dr Talkmore Maruta @dr_maruta
564 Followers 840 Following
Hanna Notte @HannaNotte
14K Followers 2K Following Russia | Middle East | Nuclear weapons | Director for Eurasia @JamesMartinCNS | Snr. Associate @csiserep | Oxford PhD| Writing a book @wwnorton I Berlin-based
Chloe Hadjimatheou @chloehadj
6K Followers 2K Following Narrative editor & invest. reporter @Observeruk. Documentaries and podcasts. LuckyBoy, The Gas Man, Burning Sun, Mayday, Islamic States' Most Wanted, Fatwa
EU Non-Proliferation ... @EU_NonProlif
5K Followers 704 Following EU-supported consortium of independent think tanks to discuss measures against WMD proliferation as well as conventional weapons, including SALW
Tobias Billström @TobiasBillstrom
40K Followers 394 Following Sveriges förutvarande utrikesminister/Former Minister of Foreign Affairs of Sweden. Detta konto är inte aktivt/This account is not active.
Sannimari Veini @SannimariVeini
51 Followers 444 Following
Crossbow Analytics LL... @CrossbowLlc
194 Followers 266 Following Providing tailored, timely analysis of CBW threats from state and non-state actors. RT ≠ endorsement. Crossbow Analytics LLC -- [email protected]
Bioweapons Disinforma... @BioweaponsM
287 Followers 33 Following The Bioweapons Disinformation Monitor works to counter #bioweapons #disinformation. Based @warstudies @KingsCollegeLon
Almuntaser Albalawi @ALBALAWI6
475 Followers 708 Following Nuclear Engineer and Political Scientist @UNIDIR Middle East WMD | Fellow @PRIF_org @theELN @BSPH_CHS @CBWNet | RT not endorsement
Global Biodefense @GlobalBioD
9K Followers 3K Following News on pathogens and preparedness for public health emergencies. Health security, rapid diagnostics, CBRN medical countermeasures.
Elena Sokova @esokova
3K Followers 717 Following Vienna Center for Disarmament and Non-Proliferation
Marjolijn van Deelen @MJvanDeelenEU
3K Followers 562 Following Special Envoy for Space, EU @eu_eeas #EUInTheWorld RTs/follows ≠ endorsements
CBRN News @CBRN_news
383 Followers 375 Following A digest of CBRN News from around the world, with a focus on emerging events. Retweets are not endorsements.
Mark Smith @MarkSmithWP
3K Followers 2K Following Senior Programme Director at Wilton Park. Non-proliferation, disarmament, arms control. Other stuff, occasionally. All views are mine. RT ≠ endorsement.
Caitriona McLeish @Camcleish
549 Followers 661 Following CBW researcher utilising insights from history, STS and innovation studies.
Bob Mikulak @ArvaBob
30 Followers 84 Following
Mirko Himmel @Mirko_Himmel
219 Followers 312 Following Biochemist, trained in mol cell biology & med microbiology. Activities: research on molecular infection mechanisms; biosecurity; bio/chemical arms control.
CBRNe Preparedness @CBRNePrprdness
175 Followers 71 Following
UN Office for Disarma... @unodavienna
5K Followers 439 Following 🇺🇳 UN Office for Disarmament Affairs (UNODA) in Vienna official account. Liaison office, disarmament education hub, promoter of inclusive dialogue.
Leonardo Bencini @L_Bencini
552 Followers 144 Following Ambassador, Permanent Representative of Italy to the Conference on Disarmament. President of the 9th BWC RevCon (RT not endorsement)
Angela Kane @kaneview
1K Followers 96 Following
Int'l Criminal Court @IntlCrimCourt
851K Followers 1K Following International Criminal Court (ICC): fighting impunity for war crimes, crimes against humanity, genocide and aggression Follow/RT≠Endorsement FR: @CourPenaleInt
NTI @NTI_WMD
22K Followers 1K Following We're a nonprofit global security organization focused on reducing nuclear, biological, and emerging technology threats imperiling humanity.