In 2011, President Barack Obama announced that the US would withdraw from Afghanistan by the end of 2014, concluding Operation Enduring Freedom. Although significant numbers of US troops were withdrawn by 2014 and NATO's International Security Assistance Force (ISAF) had concluded, 9,800 US soldiers remained deployed inside of Afghanistan during Operation Freedom's Sentinel, a part of NATO's subsequent Resolute Support Mission (RSM). General John F. Campbell requested an additional 1,000 US troops in light of the new military operation.