Elsewhere on Capitol Hill, Pentagon leaders told a Senate panel Tuesday they would ignore any unlawful order by the president to launch a nuclear strike. The testimony came as part of the first congressional hearings in more than 40 years on the president’s authority to start a nuclear war. This is Connecticut Democrat Chris Murphy.

Sen. Chris Murphy: “We are concerned that the president of the United States is so unstable, is so volatile, has a decision-making process that is so quixotic, that he might order a nuclear weapon strike that is wildly out of step with U.S. national security interests.”