The U.S. rationale for the Iraq War has faced heavy criticism from an array of popular and official sources both inside and outside the United States. Putting this controversy aside, both proponents and opponents of the invasion have also criticized the prosecution of the war effort along a number of lines. Most significantly, critics have assailed the U.S. and its allies for not devoting enough troops to the mission, not adequately planning for post-invasion Iraq, and for permitting and perpetrating widespread human rights abuses. As the war has progressed, critics have also railed against the high human and financial costs.