Yevno Azef

Yevno Fishelevich Azef was a Russian socialist revolutionary who also operated as a double agent and agent provocateur. He worked as both an organiser of assassinations for the Socialist Revolutionary Party and a police spy for the Okhrana, the Russian Empire's secret police. He rose through the ranks to become the leader of the Socialist Revolutionary Party's terrorist branch, the SR Combat Organization, from 1904 to 1908.