NEW YORK – “This is manifestly not Saigon,” said United States Secretary of State Antony Blinken as helicopters snatched fleeing Americans from the embassy roof in Kabul. It’s incomparably worse for America’s world standing.

Like the fellow in the Sam Cooke song, Blinken doesn’t know much about history or geography. Unlike the man in the song, he doesn’t know that one and one is two, by which I mean Russia and China.

Richard Nixon opened diplomatic relations with China three years before the fall of South Vietnam, securing China’s tacit agreement not to exploit the Communist victory by exporting the revolution to the rest of Southeast Asia.