checkmate

If we were to let these differences, and the Communists' exploitation of them, break up the union that has stopped aggression in Korea the checkmate would be against us.

如果我们放任这些分歧，看着它们被中共所利用，一个阻止了朝鲜侵略行为的联盟将因此分崩离析，垮台的就会是我们。