Paul Ryan: Obama cannot keep promise of no boots on ground

(CNN) - Rep. Paul Ryan doubts President Barack Obama will be able to maintain his promise that there will be no American boots on the ground in the fight against ISIS.

"I'm supportive of what the President has done going into Syria and Iraq, but you have to see this thing through," the Wisconsin Republican said Tuesday on CNN's "Erin Burnett OutFront."

Obama suggested in an interview with CBS' "60 Minutes" that his policy of sending no U.S. combat troops will stay in place. The situation in the region is more a political problem than a military one, he said.

According to a CNN/ORC International poll, the overwhelming majority of Americans (73%) support the current airstrike campaign but less than four in 10 favor sending combat troops into Iraq and Syria.

If Obama's administration ultimately comes to Congress with a plan to send combat troops to Iraq and Syria, Ryan said he would support it.

"I think the President should come to Congress with an authorization of force resolution and I would support it," he said. "And I would help the President pass that because I think it's necessary to see this threat through."

"We need to destroy ISIS, and we need to do what it takes to destroy ISIS," he continued.

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