KEILAR: Today marks 70 years since American forces dropped an atomic bomb on Japan during World War II, devastating the city of Hiroshima. Thousands of people lost their lives that fateful day in 1945. Among them, the U.S. ambassador to Japan, Caroline Kennedy, the daughter of former U.S. President John F. Kennedy. In light of the occasion, Secretary of state John Kerry sought to remind the public that nuclear weapons are not just a concern of the past but today's ceremony, quote, "underscores the importance of the agreement that we reached to reduce more nuclear weapons." The stage is set for U.S. congressional showdown on the Iran nuclear deal. Senators have agreed to begin debate on September 8th after returning from a month-long recess. The president has an uphill battle. Mitch McConnell made comments a short time ago.</s>SEN. MITCH MCCONNELL, (R-KY), SENATE MAJORITY LEADER: The president strikes me, at least so far, as treating this like a political campaign. Demonize your opponents, get the Democrats all angry, and rally around the president. To me, this is a different kind of an issue. This is not your typical political debate. This is an enormous national security debate that the president will leave behind, under the Constitution, a year and a half from now, and the rest of us will be dealing with the consequences of it. So I wish he would tone down the rhetoric and let's talk about the facts.</s>KEILAR: McConnell was talking about President Obama's comments yesterday when he said that those chanting "death to America" are finding common cause with the Republican caucus. And Congress has until September 17th to vote on the deal that. That's it for me. I'll be back at 5:00 p.m. on "The Situation Room." For our international viewers, "Amanpour" is next. For our viewers in North America, "Newsroom" with Brooke Baldwin starts right now.</s>BROOKE BALDWIN, CNN ANCHOR: Brianna Keilar, thank you so much.
Mitch McConnell Comments on Obama's Iran Nuclear Deal.