The greater we supported the corrupt government in Kabul and the more American troops we sent, the more the Taliban prospered. A similar dynamic is at play in Iraq. Consequently, without a change in American policy the cycle of violence in Iraq will continue its ghastly spiral.
The long-tail effects of chemical weapons continue to plague Iraq today, burdening a decimated health care system, and providing horrifying visual fodder for extremists who would incite hatred against the West.
From a taxpayer's perspective we can accept a company may try its best but it may still screw up. That is why any government contract must have sufficient, qualified contracting officers riding herd on the company.
The difference in opinion between the current president and the presidential candidates is of little importance to the issue of troop withdraw from Iraq, as the choice is not necessarily theirs to make.