Michael Morell, former deputy director of the CIA, suggested on Monday that the United States should support more aggressive action by Syrian rebels in the civil war.

"When we were in Iraq, the Iranians were giving weapons to the Shi'a militia, who were killing American soldiers," Morell told "CBS This Morning" co-host Charlie Rose.

"The Iranians were making us pay a price. We need to make the Iranians pay a price in Syria. We need to make the Russians pay a price."

He went on to explain making them "pay the price" would mean killing Russians and Iranians, and said he wants to make Syrian president Bashar al-Assad uncomfortable.

"I want to go after those things that Assad sees as his personal power base. I want to scare Assad."

See the rest of Rose's interview with Morell Monday night on the "Charlie Rose Show" on PBS.