Nearly 4,500 American soldiers were killed and another 32,000 wounded during the Iraq War, which officially ended in December 2011. The trauma caused by the war on individuals, families, society and the economy is enduring and hard to wipe off. A recent Gallup poll showed that 53 percent of Americans believe their country "made a mistake sending troops to fight in Iraq," while 42 percent say it was not a mistake. [Xinhua]