'Significant risk' once U.S. withdraws from Afghanistan -CIA Director

"There is a significant risk once the U.S. military and the coalition militaries withdraw," Burns told the U.S. Senate Intelligence Committee, although he said the United States would retain "a suite of capabilities."

Biden is set to announce in a speech scheduled for 2:15 p.m. EDT (1815 GMT) at the White House that all 2,500 U.S. troops remaining in Afghanistan will be withdrawn no later than Sept. 11. By pulling out without a clear victory, the United States opens itself to criticism that a withdrawal represents a de facto admission of failure.