AFP – The UN Security Council on Wednesday agreed to roll out new measures to punish North Korea after Pyongyang announced it had carried out a successful hydrogen bomb test – a claim rejected by Washington With backing from China, Pyongyang's main ally, the 15-member council strongly condemned the test and said it would begin work on a new UN draft resolution that would contain "further significant.UN diplomats confirmed that talks were underway on strengthening several sets of sanctions that have been imposed on North Korea since its first tested an atomic device in 2006.