In April 2003, as the U.S.-led invasion of Iraq was ending, the Pentagon projected in a formal planning effort that the U.S. military occupation of the country would end this month.

Instead, December 2004 brought the deadliest single incident of the war for U.S. forces, with more than 80 casualties suffered yesterday by U.S. troops, civilian contractors and Iraqi soldiers when a U.S. base near the northern Iraqi city of Mosul was blasted at lunchtime

Precision of base attack worries experts