In the process of imperialism’s gradual extinction, there emerged, in the mid-twentieth century, Soviet social imperialism. Under the leadership of Lenin and Stalin, Russia was once a great socialist country. But after Stalin passed away, the renegade clique of Khrushchev and Brezhnev launched a counter-revolutionary coup, seized Party and government power, restored capitalism in a big way, and transformed the Soviet Union into a social imperialist country.