Sometimes it may seem as if progress is stalled but what history of post-war Germany shows is that strength and determination and focus and adherence to the values that we care about will result in a better future for our children and our grandchildren.

The profound mistake of Reverend Wright's sermons is not that he spoke about racism in our society. It's that he spoke as if our society was static; as if no progress has been made; as if this country - a country that has made it possible for one of his own members to run for the highest office in the land and build a coalition of white and black; Latino and Asian, rich and poor, young and old - is still irrevocably bound to a tragic past.

People of Berlin - people of the world - this is our moment. This is our time.

Yes, we can. Yes, we can change. Yes, we can.

Iran has agreed to deepen our coordination as we work to locate Robert Levinson, missing from Iran for more than eight years. Even as we rejoice in the safe return of others, we will never forget about Bob. Each and every day our hearts are with the Levinson family, and we will not rest until their family is whole again.

I'm personally very grateful to my many friends in the Greek-American community, sons and daughters of Greece who have found success in every walk of American life.

We don't turn back. We leave no one behind. We pull each other up.