On November 17, 2008, the Iraqi Foreign Minister Hoshiyar Zebari and U.S. ambassador Ryan Crocker signed the agreement in an official ceremony.We'll recall that President Obama didn't take office until January 20, 2009 and at that time the US government had already agreed that all US forces would leave Iraq by midnight, December 31, 2011.
I don't believe that we should have negotiated nor signed an agreement. We were not invited into Iraq. As it turns out, the Iraqi government is probably not stable enough to stand at this time and some observers believe that the country might slide into sectarian and political violence. That's for the Iraqi people to decide.
However, President Obama's promise to bring the troops home was an empty promise, one that he hadn't negotiated. Under the terms of the SOFA, he had no choice; it was already written in an agreement negotiated under the Bush administration. However, his decision to make political hay out of leaving Iraq might become a huge strategic blunder if Iraq devolves into chaos.