Too often, we have failed to enforce international norms when it's inconvenient to do so.

The United States will do what we must to prevent Iran from obtaining a nuclear weapon.

For we have a choice in this country. We can accept a politics that breeds division, and conflict, and cynicism. We can tackle race only as spectacle - as we did in the OJ trial - or in the wake of tragedy, as we did in the aftermath of Katrina - or as fodder for the nightly news. We can play Reverend Wright's sermons on every channel, every day and talk about them from now until the election, and make the only question in this campaign whether or not the American people think that I somehow believe or sympathize with his most offensive words.

The world doesn't just revolve around you. There's a lot of talk in this country about the federal deficit. But I think we should talk more about our empathy deficit.

Now let me be clear - I suffer no illusions about Saddam Hussein. He is a brutal man. A ruthless man. A man who butchers his own people to secure his own power. He has repeatedly defied UN resolutions, thwarted UN inspection teams, developed chemical and biological weapons, and coveted nuclear capacity. He's a bad guy. The world, and the Iraqi people, would be better off without him.

This doesn't mean abandoning our values and ideals; wherever we can, it's in our interest to help foster democracy through the diplomatic and economic resources at our disposal.

I know that campaigns can seem small, and even silly. Trivial things become big distractions. Serious issues become sound bites. And the truth gets buried under an avalanche of money and advertising. If you're sick of hearing me approve this message, believe me - so am I.