Resolution 2371 on August 5 , 2017 , with approval of all the five permanent members and the ten non-permanent members in response to North Korea ’s July 2017 missile tests . The resolution tightened economic sanctions for the 6th time , since they were first imposed in 2006 , when North Korea had its first nuclear test
first nuclear test
2006 North Korean nuclear test
United Nations Security Council Resolution 2371