Republican Senator Lindsey Graham on Sunday said the United States should "weaken" Iran further as a ceasefire in the war remains tenuous. Speaking on NBC's "Meet the Press" the South Carolinian senator said he felt negotiations had "hit a wall". "My analysis is there's nothing to suggest that the people in charge now are any different in terms of the regime's goal to terrorize the world, destroy Israel, come after us. So what do you do next? You weaken them further," he said. "I'm calling to hurt this regime. If you do the same old thing, you're going to get the same results. Hurt them more maybe they'll make a deal if you hurt them enough. But right now, I think they're trying to wait us out. I think they're playing games," he added.