The 12-year Operation Inherent Resolve campaign successfully defeated the Islamic State as an organized military threat in Iraq, reducing the extremist group to scattered sleeper cells

From the articlePentagon says US troop withdrawal from Iraq is completeAlso in Pentagon says it has formally completed withdrawal of US troops from Iraq, U.S. confirms withdrawal of troops in Iraq, leaving questions about country's security | CBC News, ‘Quagmire’ over: Trump hails US exit from Iraq after 12-year ISIS mission, Trump hails the US military’s exit from Iraq after 12-year mission against Islamic State, Last US-led coalition forces withdraw from Iraq after 12 years