It might not be the funniest joke in the world, but it's not bad. Citing that Robert Kagan "Postcard from Belgium" column (about which I'm still too thick to decide: satire or real?) Iain Murray's wide- and long-ranging memory comes up with an "old Soviet joke":
There's an old Soviet joke about Lenin, Stalin and Brezhnev taking the train across Siberia, when the train suddenly stops. After a while, the Guard comes and asks them what to do. "Do not worry," says Lenin, "It is inevitable that the train will move." But nothing happens. Stalin orders the engine driver to be shot, but still nothing happens. Then Brezhnev pulls down the blinds and says, "The train is moving."