In June 2007 nobody will remember this promise. See my tagline.
If Maliki said this, you can be sure that the people he's afraid of, al-Sadr and company, will be standing behind him with a daily calendar, tearing off each day as it passes.
If you think PM Maliki is worried one whit about the American people, you're wrong. He's worried about the Shia powerbrokers, and they won't let him forget about this statement, any more than a bookie would forget about a million dollar gambling debt.