While Iraq's prime minister says he believes it'll only take two years for his own forces to take over security duties in his country, Defense Secretary Donald Rumsfeld won't sign-on to that forecast.
Rumsfeld says, "I recognize things I don't know and that's one of them."
Rumsfeld says too many variables are in play, among them: the willingness of the Iraqi people to set aside religious and tribal differences and unite around a new government, and the pace at which Iraqi forces develop "the skills and the sophistication" to handle security duties on their own.
Rumsfeld says insurgents are "locked in a test of wills" with the U-S and the new Iraqi government.
He says there's plenty of evidence that insurgents have studied U.S. history, particularly the souring of public opinion about the Vietnam war and are hoping history repeats itself in Iraq.