Complex sentence: In 2004 it was re-adopted, on the order of Coalition Provisional Authority chief Paul Bremer as the national anthem of Iraq after it was replaced by the old anthem Ardh Alforatain (1981-2004) associated with Saddam Hussein's Baath regime.
Split into simpler sentences: In 2004 it was re-adopted, on the order of Coalition Provisional Authority chief Paul Bremer as the national anthem of Iraq. It replaced the old anthem Ardh Alforatain, which was in use from 1981 to 2004 and associated with Saddam Hussein's Baath regime.