Al Qaida's "Iraq branch"
Thousands of Jordanians rallied in the capital and other cities shouting "Burn in hell, Abu Musab al-Zarqawi!" a day after three deadly hotel bombings that killed at least 59 people. Officials suspected Iraqi involvement in the attacks, which were claimed by al-Qaida's Iraq branch.
So al-Qaida now has a full-fledged "Iraq branch," which can organize and launch extremely deadly terrorist attacks on neighboring countries.
Regardless of one's views on the level and quantity of Iraq/al-Qaida connections before the war (if any), it is indisputable that al-Qaida had no such branch and no such capabilities based in Iraq prior to the U.S. invasion.
Even if one believes that there are lots of important benefits from our invasion of Iraq, isn't this development unquestionably a very undesirable outcome of this war?