Everything we've done has been designed to make sure that we address that number one priority. That's what the sanctions regime was all about. That's how we were able to mobilize the international community, including some folks that we are not particularly close to, to abide by these sanctions. That's how these crippling sanctions came about, was because we [USA] were able to gain global consensus that Iran having a nuclear weapon would be a problem for everybody.
The other thing is going to be me being able to show not just the American people or the Israeli people but the world that, in fact, we have mechanisms in place that will prevent Iran from having a nuclear weapon.
We can certainly be on the same side and the same front with the workers and with the oppressed people of Iran. We can certainly be on the same front with them.
That may prevent us from getting a deal done, It is there to be had. Whether ultimately Iran can seize that opportunity - we will have to wait and see, but it is not for lack of trying on our part.
If you're saying that Prime Minister [Benjamin] Netanyahu got fired up, he's been fired up repeatedly during the course of my presidency, around the Iran deal and around our consistent objection to settlements.
There's no way to resolve Syria without Iran being involved, given its financing of Assad and the fact that Hezbollah is probably the most effective fighting force that Assad can count on.
When I came into office, the world was divided. Iran was resurgent. Iran is at its weakest point, economically, strategically, militarily, then since - then in many years. And we are going to continue to keep the pressure on to make sure that they do not get a nuclear weapon. That's in America's national interest and that will be the case so long as I'm president.
If Iran does not take steps in the near future to live up to its obligations, then the United States will not continue to negotiate indefinitely... Our patience is not unlimited.
Iran has been a neighbor for millenia, and will continue to be a neighbor for millenia. We have no issue with seeking to develop the best terms we can with Iran.
Over more than a decade, Iran had moved ahead with its nuclear program. And before the deal, it had installed nearly 20,000 centrifuges that could enrich uranium for a nuclear bomb.
When it comes to preventing Iran from obtaining a nuclear weapon, I will take no options off the table. ... That includes all elements of American power: a political effort aimed at isolating Iran, a diplomatic effort to sustain our coalition and ensure that the Iranian program is monitored, an economic effort that imposes crippling sanctions and, yes, a military effort to be prepared for any contingency.
Iran's Supreme Court has issued a fatwa against the development of nuclear weapons. President [Hassan] Rouhani has indicated Iran will never develop nuclear weapons. I've made clear that we respect the right of the Iranian people to access peaceful nuclear energy in the context of Iran meeting its obligations.
We've achieved this historic progress through diplomacy, without resorting to another war in the Middle East. I want to also point out that by working with Iran on this nuclear deal, we were better able to address other issues.
Americans coming home, an Iran that has rolled back its nuclear program and accepted unprecedented monitoring of the program -these things are a reminder of what we can achieve when we lead with strength and with wisdom, with courage and resolve and patience. America can do and has done big things when we work together.