President Obama announced on Friday that the United States would bring all troops home from Iraq by the end of the year, keeping his 2008 campaign promise to end the nearly nine-year war.
Asked if it was worth it, Antony Blinken, national security adviser to Vice President Joe Biden, told reporters "history is going to have to judge."
For the record, the Defense Department has identified 4,471 American service members who have died since the March 19, 2003 start of the Iraq war.
Saddam Hussein's iconic statue was toppled on April 9, 2003.
On May 1, 2003, President George W. Bush announced "major combat operations have ended." He spoke on an aircraft carrier with a large banner proclaiming "Mission Accomplished" behind him, though sailors on that ship have said the banner was a nod to them because they were returning home from a successful mission that had been extended because of the war.
Using Pentagon figures, the Brookings Institution calculated 32,175 wounded.More than 1 million Americans have served in Iraq, Mr. Obama said.
There are 39,500 troops still in Iraq.
The non-partisan Congressional Budget Office in August said the war has cost about $709 billion while the Congressional Research Service said it cost about $748 billion.
According to Iraqbodycount.org, there have been somewhere between 103,143 - 112,708 civilian casualties in Iraq.