"Looks as though Sen. Barack Obama (D-Ill.) kept his word to Sen. Hillary Rodham Clinton (D-N.Y.) in the one rare peaceful moment of the past month of their increasingly nasty primary campaign.

During the Las Vegas debate on Jan. 15 -- which came after a week of fighting about the issue of race and the legacy of Martin Luther King Jr.-- Clinton and Obama played nice for the crowd. Given a chance by the moderator, NBC "Nightly News" anchor Brian Williams, to ask Obama a question, Clinton asked if he would co-sponsor legislation to require the president to get Congress's approval before committing to Iraq long-term.

Almost perplexed by the softball question, Obama paused and said, "Well, I think we can work on this, Hillary." The crowd broke into laughter, then applause.

Sure enough, when the Senate reopened for legislative business Tuesday, Obama had signed on as third co-sponsor of the legislation, technically known as "S. 2426 -- A bill to provide for congressional oversight of United States agreements with the Government of Iraq."

Granted, this is hardly a cease-fire.

In the past week, the candidates have tussled over accusations of suppressing each other's voters in the Nevada caucuses, Obama accused Clinton of being a "corporate lawyer" for anti-union Wal-Mart, and Clinton accused Obama of representing a "slumlord" in Chicago." (Mary Ann Akers And Paul Kane, The Washington Post, January 24, 2008)