 Complete the following phrase:  Mirbach was assassinated at the German embassy in Moscow by Yakov Grigorevich Blumkin and Nikolai Andreyev at the request of the Central Committee of the Left Socialist-Revolutionaries, who were trying to reignite the war between Russia and Germany. Blumkin entered Mirbachs residence in Moscow using forged papers and shot his victim at point blank range. As Mirbach tried to escape, Andreyev fired a second bullet and both of the assassins leapt out of the window and then drove away in a Cheka car. Mirbachs assassination signaled the beginning of the 