A big story to watch out for today is the testimony before key Senate committees by Gen. David Petraeus and Ambassador Ryan Crocker — and specifically, the fact that all three remaining presidential candidates will be questioning him at various points throughout the day.

Expect John McCain to give praise in the form of questions, and for Barack Obama and Hillary Clinton to lay out their views on why we should be leaving Iraq in an orderly fashion. But expect all of them to be careful — the news media will be watching very closely, and replaying their "questions" all over the nightly news for some time to come.