President Donald Trump has declared his intention to reduce U.S. military engagement in Syria, but a new Pentagon report warned that the extremist group Islamic State could then make a comeback in the war-torn country within six to 12 months and "regain limited territory."

The report issued on Feb. 4, 2019, by the Defense Department's Inspector General warned that the IS group continues to attract dozens of foreign fighters to Syria and Iraq each month, and maintains a flow of external donations.


IS is "regenerating key functions and capabilities more quickly in Iraq than in Syria," it also said.

President Donald Trump.

(Photo by Gage Skidmore)

In both countries, the Inspector General said, local forces remain heavily reliant on support from the U.S.-led coalition fighting against the IS group.

Trump surprised U.S. lawmakers and international allies in January 2019 by announcing he was withdrawing all 2,000 U.S. troops from Syria.

Critics have said that a vacuum left by the departure of U.S. troops from Syria, where they are assisting a Syrian Arab and Kurdish alliance fighting against some of the last IS-held areas and other forces, could result in a resurgence of the IS and Al-Qaeda in the country or neighboring Iraq.

This article originally appeared on Radio Free Europe/Radio Liberty. Follow @RFERL on Twitter.