2015 · Prosecutor · Disputed deathAlberto Nisman
Nisman was due to testify to Congress about allegations that senior Argentine officials concealed Iranian responsibility for the AMIA bombing. His death destabilised Argentine politics and deepened scrutiny of intelligence and the AMIA investigation.
Baseline dossier published; continuing evidence review
18 Jan 2015Buenos Aires, ArgentinaHomicide according to later federal judicial findings
2015 · Political opposition · AssassinationBoris Nemtsov
Nemtsov was preparing opposition activity and reports on corruption and Russian military involvement in Ukraine. His death removed a prominent opposition bridge between liberal politics and former government experience.
Baseline dossier published; continuing evidence review
27 Feb 2015Moscow, RussiaHomicide
2015 · Media executive · Accidental deathMikhail Lesin
Lesin had built Russia's state media system and possessed knowledge of Kremlin media finance, offshore structures, and elite relationships. His death intensified scrutiny of Russian media assets and unexplained deaths abroad.
Baseline dossier published; continuing evidence review
5 Nov 2015Washington, D.C., United StatesAccidental death according to U.S. authorities