Why The Change?

But in the past few months, the world has changed for both Mr. Bush and Mr. Kim, two men who have made clear how deeply they detest each other. Both are beset by huge problems, and both needed some kind of breakthrough.

For Mr. Bush, bogged down in Iraq, his authority undercut by the November elections, any chance to show progress in peacefully disarming a country that detonated a nuclear test just four months ago could no longer be passed up.