NEW YORK (Reuters) - President Donald Trump said on Thursday the United States would be adding more sanctions on North Korea. Tensions have escalated in recent weeks over Pyongyang s missile and nuclear weapons program, despite intense pressure from world powers.  We will be putting more sanctions on North Korea,  Trump said in response to a question at a meeting with Afghan president Ashraf Ghani. On Afghanistan, Trump said the U.S. military was doing more leading than fighting. 