CEE & SEE Defense Weekly Briefing: August 16–21, 2026

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Top 7 Stories

Ukrainian Nord Stream Sabotage Suspect Arrested in Croatia

Croatian authorities arrested a Ukrainian national, identified by German prosecutors as Vladimir Z., in Pula on August 19 under a European arrest warrant tied to the 2022 Nord Stream pipeline explosions. Poland had previously declined to extradite him to Germany; his detention in Croatia reopens that path. Read the full report

Latvia Detains Three Over Milrem Robotics Arson in Estonia

Three suspects were detained in Latvia over a deliberate fire set at a Tallinn facility used by Milrem Robotics, the Estonian maker of unmanned ground vehicles supplied to Ukraine. Estonian officials are investigating possible sabotage and Russian involvement. Read the full report

Hungary Reviews 4iG Contracts Including $4.2 Billion Defense Deal

Prime Minister Péter Magyar ordered a review of all state contracts signed with 4iG Group under the previous Orbán government, including a Defense Ministry framework agreement worth roughly $4.2 billion. 4iG shares fell over 14% on the announcement. Read the full report

Ukraine Arms Probe Traces Funds to Croatian Zubak Family

Ukraine's investigation into a failed $36.6 million mortar-round procurement has reached Matias Zubak, son of Croatian arms dealer Zvonko Zubak, and a transaction involving Bosnia and Herzegovina's Vitezit explosives plant. Read the full report

Cyberattack Wave Hits State Institutions Across CEE and SEE

Poland, Latvia, Romania, Hungary, Croatia, Bosnia and Herzegovina, and Slovakia have all disclosed cyberattacks on government or state-owned systems since June, exposing tens of millions of records and, in Poland's case, reaching an operational power plant. Read the full report

Switzerland Seeks CHF 970 Million Air Defense Funding Boost

Switzerland's Federal Council plans to request CHF 970 million in supplementary 2026 funding to secure production slots for short- and medium-range air defense, radar, and counter-drone systems, citing lengthening delivery schedules across the international arms market. Read the full report

Serbia Says New Elbit Drone Factory Will Target Export Markets

President Aleksandar Vučić said Serbia's joint drone venture with Israel's Elbit Systems, set to open between September 15 and 20, will supply the Serbian Armed Forces and export surplus production to customers unable to buy Israeli drones directly. Read the full report

This Week's Analysis

F-35 Fever: Why 13 European Air Forces Bought the Same Jet

At least 13 European air forces have ordered close to 700 F-35s combined, even as Portugal and Spain walked away citing dependency concerns and Europe's own FCAS program formally collapsed in June. Read the full analysis

Russian Plots Put European Defense Executives at Risk

German authorities reportedly assessed that Russian intelligence was preparing an operation against Donaustahl CEO Stefan Thumann — the latest in a pattern running from the 2015 poisoning of Bulgarian arms dealer Emilian Gebrev to the 2024 plot against Rheinmetall's Armin Papperger. Read the full analysis