We are willing to uphold principles that have resulted in unprecedented prosperity and security throughout Europe and around the world. With the threat of climate change only becoming more urgent, Angela [Merkel] and I focused on the need for American and E.U. leadership to advance global cooperation.

We'll build new ties of trade and of commerce, culture and education that unleash the potential of the Iraqi people.

That support has been so constant and gracious and loving. Michelle and I have never felt as if, at any stage, folks didn't have our backs. And as a consequence, I think that just spurred us on that much more to make us want to do the right thing, and do our best in the positions that we have.

In the wake of 9/11, my meetings with Arab and Pakistani Americans, for example, have a more urgent quality, for the stories of detentions and FBI questioning and hard stares from neighbors have shaken their sense of security and belonging. They have been reminded that the history of immigration in this country has a dark underbelly; they need specific reassurances that their citizenship really means something, that America has learned the right lessons from the Japanese internments during World War II, and that I will stand with them should the political winds shift in an ugly direction.

If everything seems to be the same and no distinctions are made, then we won't know what to protect. We won't know what to fight for.

This is American leadership at its best: We stand with people who fight for their own freedom, and we rally other nations on behalf of our common security and common humanity.

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.