The Obama administration is considering cooperating with Russia in Syria to target al Nusra.
"I tend to think not," he told The Hill.
The secretary of State pushed back on claims the administration lacks a comprehensive plan.
The two sides will hold "deconfliction discussions" in the fight against ISIS.
The two countries could soon be operating against ISIS in Syrian airspace.
Pentagon officials say signs point to Russia establishing a forward air operating base in Syria.
Establishing the zones could draw the U.S. into a war with Syria.
The move could bring U.S. forces closer to war with Syria.
Rep. Chris Van Hollen (D-Md.) said Syrian rebels would primarily fight Assad, not ISIS.
The House will vote Wednesday on the measure and a stopgap spending bill.
Peter Theo Curtis was held captive for nearly two years by an al Qaeda-linked group.
McCain said delays in aid would "fuel the growing danger" to the U.S. and allies.
The Pentagon will “wait to see” whether Russian President Vladimir Putin was sincere in announcing...
It was said to be 20 percent earlier this month.
The Pentagon is considering allowing U.S. troops to embed with Iraqi forces.
"We are not where we should be at this point," said the former CIA director.
"He has absolutely no respect for President Obama," he said of Putin.
Russia is also increasing its military flights to the country, according to U.S. officials.
The number is far lower than what Defense officials say they hoped for.
The Pentagon said it would start "very soon" on selecting Syrian groups for training.
Obama thanked lawmakers “for the speed and seriousness" they brought to the issue.
The administration is suspicious Assad hid some chemical weapons.
The Defense spending bill covers a $5B counterterror fund requested by Obama.
A senior Democratic lawmaker says that a Sunni militant group has used U.S. arms to wreak havoc...