THE Kremlin said that Joe Biden had debased the United States by calling Russian President Vladimir Putin a "crazy SOB", casting the U.S. president's remark as part of a failed "Hollywood cowboy" act. The U.S. president made the "crazy SOB" remark as part of a sentence about threats to the world - including "that guy Putin and others", the risk of nuclear conflict and the existential threat to humanity from climate change. "The use of such language against the head of another state by the president of the United States is unlikely to infringe on our president, President Putin," Kremlin spokesman Dmitry…