Ken Dilanian

Several doctors and nurses were killed immediately, and patients who couldn't move burned to death in the ensuing fire, according to a detailed new account of the attack by the international aid group based on interviews with 60 staff members.

With no regular American presence in the war theater, the U.S. has struggled to answer basic intelligence questions about the situation in Syria and Iraq, including the Islamic State group's fighting strength. And the overall U.S.-led bombing campaign has failed to dislodge the group from its self-declared caliphate across both countries.

The number of people applying for or receiving security clearances whose fingerprint images were stolen in one of the worst government data breaches is now believed to be 5.6 million, not 1.1 million as first thought, the Office of Personnel Management announced Wednesday.