Carlos Barria/ReutersWashington (AFP) - Donald Trump thinks Chinese President Xi Jinping is "putting pressure" on North Korea, the US president said in an interview to air Sunday, as tensions mount over Pyongyang's nuclear and missile programs. If North Korea carries out a nuclear test "I would not be happy," Trump told the CBS television network's "Face the Nation" program. "And I can tell you also, I don't believe that the president of China, who is a very respected man, will be happy either," Trump said in excerpts of the interview released Saturday. Asked if "not happy" signified "military action," Trump answered: "I don't know.