A nuclear Iran is a threat to America's national security, and it is a threat to Israel's national security. We cannot afford to have a nuclear arms race in the most volatile region of the world.

This visit [to Singapore] is an occasion to mark the 50th anniversary our bilateral relationship with Singapore, which is one of our strongest and most reliable partners in South-east Asia.

Together, we're going to finish the job we started.

The other reason might be that you want to talk to voters when you've got seven primaries in seven days. Understand what's happened in this race - where we campaign actively in a state, and voters have the chance to see me directly, they check under the hood, and they kick the tires, when we don't have as much time.

Like no other illness, AIDS tests our ability to put ourselves in someone else's shoes - to empathize with the plight of our fellow man. While most would agree that the AIDS orphan or the transfusion victim or the wronged wife contracted the disease through no fault of their own, it has too often been easy for some to point to the unfaithful husband or the promiscuous youth or the gay man and say This is your fault. You have sinned. I don't think that's a satisfactory response. My faith reminds me that we all are sinners.

We need to internalize this idea of excellence. Not many folks spend a lot of time trying to be excellent.

That's why I stand here tonight. Because for two hundred and thirty two years, at each moment when that promise was in jeopardy, ordinary men and women - students and soldiers, farmers and teachers, nurses and janitors - found the courage to keep it alive.