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

Iraq war: What happened two decades ago?

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

More than 20 people dead amid political turmoil in Baghdad

Days of Chaos in Baghdad: Protest or Meltdown?

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