Trump accepts Nikki Haley's resignation as U.S. ambassador to UN

File photo shows Nikki Haley (R) tallks to U.S. President Donald Trump prior to a Security Council meeting at the UN headquarters in New York, Sept. 26, 2018. U.S. President Donald Trump said on Tuesday he has accepted Nikki Haley's resignation as the country's ambassador to the United Nations. (Xinhua/Li Muzi)