The war began in March 2003, when a largely British and American force attacked Iraq. They were supported by small contingents from Australia, Denmark and Poland. The invasion led to the overthrow of Iraqi leader Saddam Hussein. The U.S. led coalition occupied Iraq and attempted to establish a new democratic government. The coalition, however, was unsuccessful in restoring order to Iraq. The unrest led to asymmetric warfare with the Iraqi insurgency, civil war between Sunni and Shia Iraqis and al-Qaeda operations in Iraq. As a result of this failure to restore order, a growing number of coalition nations have withdrawn troops from Iraq. The causes and consequences of the war remain extremely controversial. Song: Hoffnung - Warheit (Azad, Jeyz, Sezai and Chaker)