South Carolina Sen. Lindsey Graham is not a fan of Texas Sen. Ted Cruz's foreign policy proposals. During Tuesday's undercard GOP presidential debate, Graham criticized his rival's approach to Syria by referencing "The Princess Bride."

"To my good friend Ted Cruz, please ask him the following question: You say you would keep Assad in power, I will tell you that is the worst possible thing that can come out of an American leader's mouth. It would be disastrous," Graham said. "Ted, getting in bed with Iran and Russia to save Assad is inconceivable. Princess Buttercup would not like this."

Cruz has quoted "The Princess Bride" on the campaign trail, and drawn criticism from one of the film's leading actors. Graham's use of "inconceivable" harkens back to the film.

As a counter to Cruz, Graham argued that he would "try to make friends throughout the world to destroy a common threat to the world." The Palmetto State senator referred to the threat as "religious Nazis" and said he would partner with the Arabs in Turkey to wipe out the Islamic terrorists.

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