The latest investments mark the largest such announcement since the U.S. lifted sanctions on Syria in December.

Al Tanf, long a cornerstone of the fight against Islamic State, has been handed over to the Syrian government as part of a drawdown of American troops.

Feb 13 (Reuters) - A U.S.-backed ceasefire agreement in northeastern Syria leaves thorny ⁠questions ⁠unresolved, as Kurds seek to retain some authority despite a much ⁠weakened hand following the rapid advance of central government forces.

The U.S.-led coalition against the Islamic State group has welcomed Syria as its 90th member. Representatives from Syria — which officially joined the global coalition in November — attended a meeting on Monday in Saudi Arabia.

U.S. Secretary of State Marco Rubio underscored his country’s support for a stable, peaceful Syria that protects the rights of all

The United States has withdrawn from its last remaining major military base in Syria. Syria’s defence ministry confirmed on Thursday that its troops had taken control of the al-Tanf military base, which was recently vacated by US troops.

A nearly monthlong mission took place amid fears that fighting in Syria could allow ISIS prisoners to escape from detention camps.