U.S. envoy declares of fight as not over with IS

The U.S. special envoy for the coalition to defeat Islamic State said on Monday said the fight against the militant group is not over, even though it is no longer able to control territory, and he said the United States does not know where the group's leader is.

Ambassador Jim Jeffrey, speaking to a briefing at the State Department, said Islamic State's loss of its last territorial stronghold in Syria over the weekend was a "great day" but he added that the fight against the group will go on and U.S. forces would remain in Syria in limited numbers to help.