We've had 60 years of intellectual development in Iran. How can we have the same system? Even theories of secularism are constantly being revised and changed.
For decades, our differences with Iran meant that our governments almost never spoke to each other. Ultimately, that did not advance America's interests.
We [USA] don't have diplomatic leverage to eliminate every vestige of a peaceful nuclear program in Iran. What we do have the leverage to do is to make sure that they don't have a weapon.
We support any deal that denies Iran nuclear weapons, that has a continuous and robust inspection mechanism and that has snap-back provisions in case Iran violates the agreement. Our concern is that Iran will use the income it receives as a result of the lifting of the nuclear sanctions in order to fund its nefarious activities in the region.
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.
Whatever Iranian people have bought, they have bought in the black market. It is not clear what they have bought, how many secondhand materials they have bought. I am very worried that something like Chernobyl will happen to Iran.
The Gulf States are extraordinarily suspicious of Iran for good reason. They view Iran as meddling in their affairs. They have seen Iran level asymmetric attacks against their facilities or their interests.
The ecological movement is concerned about this, and this is in here, where everything is public. In Iran, where everything is covert, we have no firsthand information.
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.
The North Korean regime remains one of the world's leading proliferator of missile technology, including transfers to Iran and Syria. The transfer of nuclear weapons or material by North Korea to states or non-state entities would be considered a grave threat to the United States, and we would hold North Korea fully accountable of the consequences of such action.
As you know, we don't have relationships with Iran. I mean, that's - ever since the late '70s, we have no contacts with them, and we've totally sanctioned them. In other words, there's no sanctions - you can't - we're out of sanctions.