"When the US invaded Iraq in March 2003, the Bush administration estimated that it would cost $50-60bn to overthrow Saddam Hussein and establish a functioning government. This estimate was catastrophically wrong: the war in Iraq has cost $823.2bn between 2003 and 2011. Some estimates suggesting that it may eventually cost as much as $3.7tn when factoring in the long-term costs of caring for the wounded and the families of those killed."