Obama is addressing the American Israel Public Affair Conference. He says America prefers to use diplomacy to prevent Iran from obtaining nuclear weapons but he could also use force. He starts: "Let's begin with a basic truth that you all understand: no Israeli government can tolerate a nuclear weapon in the hands of a regime that denies the Holocaust, threatens to wipe Israel off the map, and sponsors terrorist groups committed to Israel's destruction. And so I understand the profound historical obligation that weighs on the shoulders of Bibi Netanyahu, Ehud Barak, and all of Israel's leaders. A nuclear-armed Iran is completely counter to Israel's security interests. But it is also counter to the national security interests of the United States. Indeed, the entire world has an interest in preventing Iran from acquiring a nuclear weapon. A nuclear-armed Iran would thoroughly undermine the non-proliferation regime that we have done so much to build. There are risks that an Iranian nuclear weapon could fall into the hands of a terrorist organization." He says "When the chips are down, I have Israel's back. And remember that the U.S.-Israel relationship is simply too important to be distorted by partisan politics. America's national security is too important. Israel's security is too important." He says: "Iran's leaders should know that I do not have a policy of containment; I have a policy to prevent Iran from obtaining a nuclear weapon. And as I've made clear time and again during the course of my presidency, I will not hesitate to use force when it is necessary to defend the United States and its interests." He continues "That is where we are today. Iran is isolated, its leadership divided and under pressure. And the Arab Spring has only increased these trends, as the hypocrisy of the Iranian regime is exposed, and its ally – the Assad regime – is crumbling. Of course, so long as Iran fails to meet its obligations, this problem remains unsolved. The effective implementation of our policy is not enough – we must accomplish our objective. In that effort, I firmly believe that an opportunity remains for diplomacy – backed by pressure – to succeed."