...Not arguing, just discussing.
...Other short wars besides Desert Storm in recent history, Northern Alliance versus the Taliban once the U.S. got involved, England versus Argentina in the Faulklands.
...One key factor is the will of the Iraqi people who I suspect would like to be rid of Saddam.
...Another key factor is the will of the Iraqi military. In 1991 the regular enlisted men surrendered even to an unarmed newspaper reporter. The Republican Guard can be expected to fight harder to varying degrees but there aren't that many of them. Obviously at least the Kurds in the North will be on our side, as will I suspect many others to various degrees.
...A third key factor is the relative strength of the two sides. Best I can tell this would be lopsided in the U.S. coalition's favor.
...The U.S. military will be asked to fight now so that they and our allies in the region don't have to be at risk of being subjected to nuclear bombs and other weapons of mass destruction later.