In 2003, a US-led coalition invaded Iraq and removed Saddam Hussein from power. Since then, the security situation has been very instable in the country.
In 2014, an insurgency escalated into a full-scale military conflict with ISIS expanding in large areas in Iraq. Over the next three years, Iraqi security forces, supported by some global and local powers, were working to push ISIS out of the captured territories. Iraqi forces made significant gains and started storming the last remaining ISIS stronghold of Mosul.