It was also the first confrontation between the Left Opposition (led by Leon Trotsky) and the "troika" (led by Stalin, Grigory Zinoviev, and Lev Kamenev).
Ini juga merupakan konfrontasi pertama antara Oposisi Kiri (pimpinan Leon Trotsky) dan "troika" (pimpinan Stalin, Grigory Zinoviev, dan Lev Kamenev).