President Trump says he wants a swift and complete victory over the Islamic State, and he inherits the battle at a moment when the extremist group is losing ground in Iraq and Syria. The group's self-declared caliphate is looking increasingly fragile.
Could 2017 be the year the U.S. and its allies break the back of ISIS?
Progress is being made in the war against the Islamic State, according to analysts. But they caution that the U.S. is likely to face a recurring challenge in the Middle East: how to turn battlefield gains into a comprehensive political solution.