Jonah Leff

Executive Director at Conflict Armament Research (@conflictarm). Tracking weapons in conflicts.

[CAR @conflictarm]

CAR's Director @jonahleff will be part of a panel discussion of the growing threat of terrorist use of UAVs today, part of UN High Level Counter-Terrorism Week with @UN_OCT @UN_CTED @icao @UAEMissionToUN @JapanMissionUN @Portugal_UN @ROK_Mission @DrJamesRogers and @PolicyCenterNS

[CAR @conflictarm]

This week mark's CAR's 15th anniversary. When we first started in 2011, our mission was clear: put boots on the ground in conflict hotspots around the world to understand exactly what weapons were being diverted, and how. 15 years later, that core mission hasn't changed (1/3)

[CAR @conflictarm]

📢 New Vacancy: CAR seeks a Field Investigator to support and lead its field operations in the Middle East.
Come be part of CAR's ground-breaking work.

For more information, and the full application pack, go to https://t.co/3uKsF27JZw

[Drop Site @DropSiteNews]

💢 A new investigation by Conflict Armament Research traces how Yemen’s Ansarallah built an increasingly sophisticated missile and drone arsenal by examining weapon debris, internal components, and manufacturing markings recovered from battlefields, intercepted shipments, and attack sites across Yemen and the Red Sea region.

Investigators documented more than 800 missile and UAV components tied to at least a dozen weapons systems, including anti-ship cruise missiles, ballistic missiles, loitering drones, and surface-to-air systems used in attacks on commercial shipping and regional targets.

The report says many systems carried Iranian military designations rather than locally assigned Houthi names, while also showing evidence that components are being assembled and integrated inside Yemen itself.

CAR identified parts originating from companies across at least 16 countries and territories — including the U.S., China, Germany, Japan, and the UK — highlighting how global commercial supply chains continue feeding the group’s weapons infrastructure despite years of sanctions and naval interdictions.

The report suggests the Houthis increasingly rely on decentralized shipping and domestic assembly networks, allowing them to sustain long-range attacks across the Red Sea corridor.

Full report is linked below.

[CAR @conflictarm]

New 📢 from CAR: ‘Powering the Houthis: Analysing Houthi missile components’

Read CAR's new #Yemen Frontline Perspective: https://t.co/TCk2c3mNwR

[Jonah Leff @jonahleff]

Sincere thanks to the EU for its unyielding support of iTrace. We have never been better equipped for the challenge.

[Stephan Klement 🇪🇺 @Amb_Klement_EU]

We fight illicit arms trafficking! EU Ministers agreed another 6 million EUR to the iTrace project today. We’re backing @conflictarm's vital work—tracing seized weapons, dismantling trafficking networks & holding suppliers to account. 👉Security starts with action
#EUSec_Def

[Jonah Leff @jonahleff]

Here we are not even one year later with the same problem from @KenyaPower @KenyaPower_Care. This time 4 days and counting with no end or spare transformers in sight. Despicable service as always.

[Jonah Leff @jonahleff]

Bendera Lane Spring valley has been without power for 3 days now and @KenyaPower_Care @KenyaPower has done very little to respond claiming they don't have spares for a transformer. This is the service we get for paying sky high power bills. Disgusting!

[Jonah Leff @jonahleff]

Kenya's richest monopoly @KenyaPower can't manage to provide working transformers throughout the country. One on Bendera Lane in Nairobi has blown out 3 times in less than one year resulting in days and days of no power and no urgency on the part of corrupt KPLC. Ref # 14652500

[United Nations Office of Counter-Terrorism @UN_OCT]

✍️@UN_OCT & @conflictarm formalized their partnership under the #AROS Programme through a MOU building on years of collaboration on unmanned systems, including #UAS, to support Member States in addressing challenges & opportunities of related technology for #CounterTerrorism 🤝

[Jonah Leff @jonahleff]

Our Tracing Unit is the backbone of CAR’s investigations. Come join us in carrying out this exciting work.

[CAR @conflictarm]

CAR is hiring a new Trace Officer to support its Tracing Unit in investigating the supply chains of weapon systems and related components. Applications close on 20 February: https://t.co/3uKsF27JZw

[CAR @conflictarm]

CAR is #hiring for a new Trace Officer to support its investigations into the chains of custody of diverted weapons.

🔍 Trace Officer
⏰ Application deadline: 20 February 2026
📌 Details: https://t.co/3uKsF27JZw

[IISS News @IISS_org]

Conflict Armament Research (CAR) investigation teams documented electronic components found in the navigation sub-system of three North Korean KN-23 or -24 ballistic missiles used against Ukraine in 2024.

Two components were identified as being made by an EU-based company, investigators established that it had legally exported them in multiple consignments to a distributor in Hong Kong.

Read the full report I https://t.co/puGUp0aeuZ

[IISS News @IISS_org]

Debris from weapons used by Russia in Ukraine shows a continued reliance on foreign commercial parts despite international sanctions.

How do these technologies bypass export controls? And what are the implications for efforts to curtail the spread of weapons components?

Read the #MissileDialogueInitiative report by Conflict Armament Research (@conflictarm) & David Hayes: https://t.co/8KXSiAS6TQ

[UK in Somalia🇬🇧🇸🇴 @UKinSomalia]

Somalia 🇸🇴 is the first country in the world to adopt AmTag- a major step in strengthening ammunition traceability and accountability.

Proud to have supported this pilot alongside @ONSSomalia and partners. 🇬🇧🤝🇸🇴

#GoFarGoTogether

[Jonah Leff @jonahleff]

Groundbreaking development in the area of ammunition management!

[CAR @conflictarm]

CAR has successfully piloted AmTag™, a novel chemical marking system to trace state-held ammunition, with Somalia being the first country to adopt it as part of national efforts to reduce diversion, illicit proliferation, and strengthen oversight.
https://t.co/hJyBv9fL2E

[Jonah Leff @jonahleff]

@KenyaPower_Care I just spoke with a team on site and they said they are waiting for a new transformer to be installed. Please expedite this if possible. Reference number is 13064744

[Jonah Leff @jonahleff]

Bendera Lane Spring valley has been without power for 3 days now and @KenyaPower_Care @KenyaPower has done very little to respond claiming they don't have spares for a transformer. This is the service we get for paying sky high power bills. Disgusting!

[Jonah Leff @jonahleff]

@KenyaPower_Care @KenyaPower Repeated calls to customer service, who say they will call you back with updates then never do.

[Jonah Leff @jonahleff]

No power on Bendera Lane Spring Valley due to a faulty transformer. Fix it ASAP @KenyaPower @KenyaPower_Care

[Jonah Leff @jonahleff]

Without power for 3 days now and @KenyaPower and @KenyaPower_Care slow to respond and without the adequate spares despite their ever increasing exorbitant service charges. Dismayed and disappointed with this horrible service!