Resolute Support Mission
Resolute Support Mission (RSM) or Operation Resolute Support was a NATO-led multinational mission in Afghanistan. It began on 1 January 2015 as the successor to the International Security Assistance Force (ISAF), which was completed on 28 December 2014.&lt;ref name="NATO 30/01"&gt;&lt;/ref&gt; Pursuant to United Nations Security Council Resolution 2189 of 2014, RSM was a noncombat mission aimed at advising and training Afghan security forces to provide long-term security to the country, under the aegis of the Security and Defence Cooperation Agreement BSA between the United States and Afghanistan, which was originally supposed to run from 1 January 2015 and "shall remain in force until the end of 2024 and beyond" unless terminated with two years' advance notice.