Lindsey Graham says the U.S. has ‘hit a wall’ on Iran negotiations: Full interview

THINK ABOUT ONE THING -- WE CAN'T LET IRAN HAVE A NUCLEAR WEAPON. THAT'S ALL. >> JOINING ME NOW IS REPUBLICAN SENATOR LINDSEY GRAHAM OF SOUTH CAROLINA.WELCOME BACK TO "MEET THE PRESS." >> THANK YOU FOR BEING HERE AFTER A HISTORIC WEEK, THE PRESIDENT'S SUMMIT IN CHINA, ONE OF THE BIGGEST ISSUES DISCUSSED WAS TAIWAN, A SELF-RULING DEMOCRACY THAT CHINA HAS VOWED TO CONTROL, NOW CONGRESS VOTED TO APPROVE BILLIONS OF DOLLARS IN ARMS SALES TO DEFEND THE ISLAND BUT IN AN INTERVIEW AFTER THE SUMMIT PRESIDENT TRUMP ...