British authorities have opened a preliminary examination into potential war crimes following the assassination of a prominent Kremlin critic on Polish territory, judicial sources confirmed on Thursday. The victim, identified as Andrei Yakovlev, a former Russian diplomat turned vocal opponent of Vladimir Putin, was shot dead outside his residence in Warsaw on Tuesday evening.
The Crown Prosecution Service’s War Crimes Unit is reviewing evidence to determine whether the killing constitutes a violation of international law, specifically the Geneva Conventions. While the murder occurred in Poland, UK prosecutors assert jurisdiction under the principle of universal jurisdiction, which allows nations to prosecute certain grave crimes regardless of where they were committed. A senior CPS official stated that the assessment is in its early stages and no formal investigation has been launched.
Polish authorities have arrested two suspects, both Russian nationals, who are believed to have crossed into Poland from Belarus days before the attack. Polish prosecutors are treating the case as an act of state-sponsored terrorism, citing intelligence linking the assassination to Russian security services. Warsaw has summoned the Russian ambassador and demanded the extradition of any accomplices sheltering in Russia.
Yakovlev, 54, had been living in Poland under a pseudonym since 2022, after fleeing Russia following his public condemnation of the invasion of Ukraine. He had previously served as a mid-level official in the Ministry of Foreign Affairs before resigning in 2016. In recent months, he had been collaborating with a UK-based investigative group documenting alleged Russian war crimes in Ukraine.
The Home Office declined to comment on ongoing diplomatic discussions, but a spokesperson said the UK remains committed to holding perpetrators of international crimes to account. Legal experts note that securing a conviction in a British court would require proving the assassination was part of a widespread or systematic attack against a civilian population, a high legal bar.
The incident underscores the escalating pattern of targeted killings of Kremlin opponents abroad, with similar attacks reported in Spain, Germany, and the United Kingdom in recent years. The UK’s National Security Adviser is expected to brief Prime Minister Rishi Sunak on the implications for bilateral relations with Russia later this week.
