Communist China’s panic over the North Atlantic Treaty might seem absurd. Then again, too, the comrades have a long memory. Is NATO’s turn to the Pacific stirring echoes of what has been called the alliance’s “Forgotten Counterpart,” the South-East Asian Treaty Organization? Seato was launched in 1954 to curb communism. Unlike NATO, though, Seato failed as an alliance, offering a caution as President Biden pursues a “defensive perimeter” in Asia.