Senator Lindsey Graham (R-S.C.) told NBC News that Syrian President Bashar al-Assad effectively told President Trump "F. you" by having his forces flying out of an air base bombed by U.S. forces last week.

"Here's what I think Assad is telling Trump by flying from this base: 'F. you," Graham said, adding that Assad's apparent message to the United States is a mistake. 

"If you're an adversary of the United States and you don't worry about what Trump may do on any given day, then you're crazy."

Graham said Assad made a serious mistake by carrying out chemical attacks on civilian areas and thinking the new American president wouldn't respond.

Trump later bombed the base suspected of being the launchpad for the attack on the people in Idlib.

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He said Trump proved to the region that President Obama is no longer in power, and that America's enemies must tread more carefully than they have the last eight years.

He added that the only foreseeable way for Assad to be toppled and ISIS to be ridden from the area would be for ground troops to enter Syria.

Graham's abbreviation for the expletive caught host Chuck Todd by surprise. "I think that's a first for "Meet the Press"," Todd said.

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