After Taliban prisoner swap, concerns surface in U.S. over Qatar's role

WASHINGTON (Reuters) - After playing a critical role in the prisoner swap that freed the last American soldier held captive in Afghanistan, Qatar faces new scrutiny by the United States over whether it will enforce restrictions on five released Taliban fighters.

Concerns have been expressed by U.S. intelligence officials and Congressional advisers over the role of the Gulf emirate as a bridge between Washington and the world of radical Islam. But the White House says it received "very specific" assurances from Qatar on the terms under which it agreed to accept and keep tabs on the five Afghans.