The real problem, if you look at how, for example, Hezbollah got a lot of missiles that are a grave threat to Israel, it's not because they were legal, it's not because somehow that was authorized under international law; it was because there was insufficient intelligence or capacity to stop those shipments.

One of the things you learn as president is, as powerful as this office is, you have limited bandwidth. And the time goes by really quickly and you're constantly making choices, and there are pressures on you from all different directions - pressures on your attention, not just pressures from different constituencies. And so you have to be pretty focused about where can you have the biggest, quickest impact.

I had said from the start that I thought Iraq was a mistake, that we should have stayed focused on Afghanistan. I think it was the right decision because the Taliban at that point had gotten a lot of momentum before I'd gotten into office, partly because we hadn't been paying attention as much as we needed to to Afghanistan.

Leaving the broken system the way it is, that`s not a solution.

I am asking my Attorney General to create a special unit of federal prosecutors and leading state attorneys general to expand our investigations into the abusive lending and packaging of risky mortgages that led to the housing crisis. This new unit will hold accountable those who broke the law, speed assistance to homeowners, and help turn the page on an era of recklessness that hurt so many Americans.

I'm blown away. I'm flabbergasted the president [Barack Obama] made the phone call to Rouhani after 30-plus, `79, 33 years or so. And there's a reason we haven't negotiated with Iran, because they're state-sponsored terrorists. They're the central bank for terrorism around the world.

Here's the truth: the Soviet Union had thousands of nuclear weapons, and Iran doesn't have a single one. But when the world was on the brink of nuclear holocaust, Kennedy talked to Khrushchev and he got those missiles out of Cuba. Why shouldn't we have the same courage and the confidence to talk to our enemies? That's what strong countries do, that's what strong presidents do, that's what I'll do when I'm president of the United States of America.