The Sunday airstrike killed several people, including senior leader Abu Firas al Suri.
An al-Qaeda affiliate claimed responsibility.
The two men are suspected of "making, concealing and transporting explosives and toxic gas."
The first class disintegrated after they deployed into Syria.
Fadhil Ahmad al-Hayali was killed in a U.S. military air strike on Aug. 18.
The Nusra Front released seven U.S.-backed rebels after they were kidnapped last month.
The Pentagon said Muhsin al-Fadhli was killed in a strike on July 8.
The strike of Tariq bin Tahar al-'Awni al-Harzi follows that of his brother.
Mokhtar Belmokhtar may not have been killed after all.
Pew Research Center found 58 percent of Americans support U.S. using drone attacks.
“Who should we contact in case you became a martyr?” it asks.
Al Qaeda still poses the biggest threat, according to a former CIA leader.
In "60 Minutes" interview, widow of American hostage says U.S. government “did nothing” to retrieve...
"That’s the kind of propaganda they use to recruit," the president said.
The California Democrat's draft joins several other AUMF bills in Congress.
Sen. Tim Kaine (D-Va.) has urged Congress to pass a new AUMF.
The rebels had pledged to fight only ISIS with their American training.
“I think our more proximate threat are the so-called lone wolves,” James Clapper said.
The retired general says Obama should reconsider his plan to withdraw most U.S. troops.
More than 1,000 prisoners escaped.
Henry “Hank” Crumpton believes the ISIS strategy “does not reflect reality on the ground.”
News outlets are coping with a wave of cyberattacks.
Books about the Illuminati and a video game guide were found at the Pakistani compound.
"I think there's a very great concern," said Army Gen. Joseph Votel.