The Government of the United States of America decided to invade and conquer the legitimately recognized soveriegn nation of Iraq to oust the elected governing party of that nation. This decision was based on intelligence reports from numerous US and world wide agencies stating that the Saddam Hussein ruled nation was a threat to the world and to the United States directly. It is hard to believe that a country as militarily strong and technologically advanced as the United States would even have to view a country such as what Iraq was as a viable threat, especially if the government would have put eyes and ears in the inner circle of the Hussein Regime. The true threat to the United States is not in recognized, established governments but terror groups that have no boundaries.
Using the arguement that Iraq supported these terrorist groups with money and training facilities to justify action is ill conceived, when again if the United States and the coalition actually invested in effective human intel in key locations would have allowed for more effective control over the terror groups activites.
The WMD arguement was possibly the strongest arguement for engaging in the ouster of the legitimate government of Iraq, however the failure to produce evidence of such WMD with-in six months after the end of major combat proves that the decision to go to WAR may have been premature.
Of course history will be written to say that the cause was justified because the atrocities against the Iraqi's was stopped, though at the cost of US and Coalition lives. We should have left the Iraqi's to themselves and found a way to insight rebellion with-in the ranks of Husseins regime before engaging in the current conflict that we find our sons and daughters dying in.