Iraq war: What happened two decades ago?

Iraq War In Photos: 20 Years Since The U.S. Invasion

U.S. Attack on Iraq

Iraq war, 20 years on: The rise and fall of armed groups such as Al Qaeda and Islamic State

British Policy Toward Iraq

Nationwide Anti-Government Protests Call for an End to Corruption in Iraq

Oil up as U.S. looks to Iran over Iraq

WATCH: Sandstorm hits Iraq's Mosul, shrouding landmarks in dust