Since taking office, I've made it clear that the United States was prepared to begin a new chapter of engagement with the Islamic Republic of Iran. We offered the Iranian government a clear choice. It could fulfill its international obligations and realize greater security, deeper economic and political integration with the world, and a better future for all Iranians. Or it could continue to flout its responsibilities and face even more pressure and isolation.

I think that the important point is we've got to have a president who understands the benefits of free trade but also is going to enforce unfair trade agreements and is going to stand up to other countries.

Too often, we have failed to enforce international norms when it's inconvenient to do so.

We have to make sure America writes the rules of the global economy, and we should do it today while our economy is in the position of global strength, because if we don't write the rules for trade around the world, guess what: China will.

I think that [Donald Trump] clearly was able to tap into a lot of grievances. And he has a talent for making a connection with his supporters that overrode some of the traditional benchmarks of how you'd run a campaign or conduct yourself as a presidential candidate. What will be interesting to see is how that plays out during the course of his presidency.

You can't entirely compare between the United States and Greece for a range of reasons, not just because of the size of the economy.

Keep in mind that, when I came in, we had had a crisis that was the worst we've seen since the 1930s, and working with people like Chancellor Merkel, working with the G-20 and other institutions internationally, we were able to stabilize the financial system, stabilize the US economy and return to growth.