Under this situation, Cambodia formally complained on February 2011 with a letter to the the UN Security Council. The letter claimed that the fighting violated the 1991 Paris Peace Agreement, the U.N charter, and the 1962 ruling of the ICJ.11 The UN called for a permanent ceasefire and expressed its support for the Association of Southeast Asia Nations (ASEAN) to find a solution. As the ASEAN was unable to mediate the conflict, Cambodia ultimately decided to file a request at the ICJ for the interpretation of its 1962 ruling.