I will continue to believe that Israel's security is paramount.

In my first term, I sang Al Green. In my second term, I'm going with Young Jeezy.

There's something about these steps [in Oval Office] and thinking about everybody who's walked here and all the business that's been done here.

If we have Osama bin Laden in our sights and the Pakistani government is unable or unwilling to take them out, then, I think that we have to act and we will take them out. We will kill bin Laden. We will crush al Qaeda. That has to be our biggest national security priority.

I do think that it is impossible for us to think only in terms of the Palestinian-Israeli conflict and not think in terms of what's happening with Syria or Iran or Lebanon or Afghanistan and Pakistan. These things are interrelated. And if we are looking at the region as a whole and communicating a message to the Arab world and the Muslim world, that we are ready to initiate a new partnership based on mutual respect and mutual interest, then I think that we can make significant progress.

I'm not going to Wall Street [after the presidency]. The amount of time that I'll be investing in issues is going to be high. But it'll be necessarily in a different capacity.

The greatest threat to U.S. and global security is no longer a nuclear exchange between nations, but nuclear terrorism by violent extremists and nuclear proliferation to an increasing number of states.