The GRU underwent severe reductions in funding and personnel following the 2008 Russo-Georgian War, during which it failed to discover the more advanced anti-aircraft weapons obtained by Georgia. However, it continued to play a key role in several Russian operations, including in Russia's intervention in eastern Ukraine in 2014 and the subsequent annexation of Crimea. GRU agents were also implicated in numerous cyberwarfare operations across the West, including in the U.S., France, and Germany. Many of its successes took place during the tenure of Igor Sergun, who headed the service from late 2011 until his death in early January 2016. Sergun's sudden death shortly after the restoration of the GRU's influence led to speculations of foul play by Russian adversaries.