And Joe Biden, thank you for being the best Vice President I could ever hope for.

We've persevered because of a belief we share with the Iraqi people - a belief that out of the ashes of war, a new beginning could be born in this cradle of civilization. Through this remarkable chapter in the history of the United States and Iraq, we have met our responsibility. Now, it's time to turn the page.

Cuba is actually one where I am more optimistic because of the unique nature of Cuba - 90 miles off our shore with a massive ex-patriot population, now Cuban-American population that still have deep links to the island. There I am more confident that over time that the winds of commerce and telecommunication and travel start shifting the nature of that regime. But that's a small country which has almost a unique relationship to us.

[The generation engaged, inspired, worked for change] that generation, it's coming. They're not the majority yet but they're gonna be the majority soon.

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.

Those who are troubled by our existing programs are not interested in a repeat of 9/11, and those who defend these programs are not dismissive of civil liberties. The challenge is getting the details right, and that's not simple.

I don't want to make promises, not knowing what the situation's going to be three or four years out.