Trump says rapid exit from Afghanistan "unacceptable"

WASHINGTON, Aug. 21 (Xinhua) -- U.S. President Donald Trump said on Monday that a rapid exit of the U.S. troops from Afghanistan was "unacceptable" and his new Afghanistan strategy will shift from a time-based approach to one based on conditions on the ground.

Trump made the announcement in a prime-time address at 9 p.m. local time (0100 GMT, Tuesday) from Fort Myer in Virginia. He did not talk about widely anticipated increase of U.S. troops in Afghanistan.