The Pentagon says the military is too stretched to both fight insurgents and prepare for war with great world powers.
President Recep Tayyip Erdogan of Turkey criticized a proposed American-trained force that could put thousands of Kurdish militia on the Turkish border.
Lt. William Conway, who leads a team that identifies Taliban and Islamic State threats in Afghanistan, is not your typical military intelligence analyst.
An American citizen being held as an enemy combatant has told the A.C.L.U. he wants the group to represent him in challenging his indefinite wartime detention.
Security officials are exploring whether to transfer a detained U.S. citizen suspected of being an Islamic State fighter to Saudi Arabia, where he grew up.
When the Islamic State seized territory in Iraq and Syria, it had the time and space to industrialize advanced weapons manufacturing. The results included explosive space heaters and chemical rockets.