Despite the completed military operation: Are there a risk of US troops being deployed indefinitely in the Middle East?. The US presence in Syria and Iraq dates back to 2014, when a global coalition joined forces with local forces to drive Islamic State fighters from an area the size of Britain.

Nearly a decade after the first deployment of U.S. soldiers and five years after ISIS was declared defeated, Joe Biden is the third president to lead the mission. The jihadist group now resembles a low-level insurgency, particularly in Syria, rather than a government force.