t was the Russian revolutionary Leon Trotsky who coined the phrase the “dustbin of history.” To his political opponents, he sputtered, “You are pitiful, isolated individuals! You are bankrupts. Your role is played out. Go where you belong from now on — into the dustbin of history!” It is no coincidence that John Brennan, who supported the Soviet-controlled American Communist Party in the 1970s (he has acknowledged that he thought his vote for its presidential candidate Gus Hall threatened his prospects at the CIA; unfortunately, it didn’t), would borrow from Trotsky’s rhetoric in his fulminations against Donald Trump. His tweet...