President Joe Biden’s national security adviser, Jake Sullivan, has a cover story in the new issue of Foreign Affairs, entitled “The Sources of American Power”. That, of course, is a play on George Kennan’s famous article in the July 1947 issue of the same journal, entitled “The Sources of Soviet Conduct”, written under the pseudonym “X”. Kennan was a deeply learned area specialist on the Soviet Union, who wrote the article while stationed at the US embassy in Moscow. Encouraged by his ambassador, W Averell Harriman, to write exactly what he thought without concern of who he might offend in...…President Joe Biden’s national security adviser, Jake Sullivan, has a cover story in the new issue of Foreign Affairs, entitled “The Sources of American Power”. That, of course, is a play on George Kennan’s famous article in the July 1947 issue of the same journal, entitled “The Sources of Soviet Conduct”, written under the pseudonym “X”. Kennan was a deeply learned area specialist on the Soviet Union, who wrote the article while stationed at the US embassy in Moscow. Encouraged by his ambassador, W Averell Harriman, to write exactly what he thought without concern of who he might offend in...WW…