Washington — GOP Sen. Lindsey Graham of South Carolina said Sunday he expects the U.S.'s attempts to reach a diplomatic solution with Iran to fail, though he noted that he would "rather try diplomacy than take it off the table." "Let's try a diplomatic solution. I think it's going to fail. What happens next?" Graham said on "Face the Nation with Margaret Brennan." Vice President JD Vance and other U.S. negotiators are  meeting with Iranian officials in Switzerland on Sunday, as the clock starts