rival claimants from southeast Asian countries. Malaysia has militarily occupied three islands that it considers to be within its continental shelf. Swallow Reef (Layang Layang / Terumbu Layang / Pulau Layang Layang) was under control in 1983 and has been turned into an island through a land reclamation which now also hosts a dive resort. The Malaysian military also occupies Ardasier Reef (Terumbu Ubi), and Mariveles Reef (Terumbu Mantanani). Since 1992, Malaysia and Vietnam have agreed to jointly develop areas around these disputed islands. Malaysia has said that it is monitoring all of the actions made by countries involved in the dispute. Taiwan performed live fire military exercises on Taiping island in September 2012; reports said that Vietnam was explicitly named by the Taiwanese military as the "imaginary enemy" in the drill. Vietnam protested against the exercises as violation of its territory and "voiced anger", demanding that Taiwan stop the drill. Among the inspectors of the live fire drill were Taiwanese national legislators, adding to the tensions. In 2010, it was reported that the former Malaysian Prime Minister Mahathir Mohamad believed Malaysia could profit from China's economic growth through co-operation with China, and said that China "was not a threat to anyone and was not worried about aggression from China", as well accusing the United States of provoking China and trying to turn China's neighbours against China. Malaysian authorities displayed no concern over China conducting a military exercise at James Shoal in March 2013, However, until present Malaysia still maintained a balance relations with the countries involved in this dispute. But since China has start encroaching its territorial waters, Malaysia has become active in condemning China. In January 2013, the Philippines formally initiated arbitration proceedings against China's claim on the territories within the "nine-dash line" that includes Spratly Islands, which it said is "unlawful" under the United Nations Convention on the Law of the Sea (UNCLOS). An arbitration tribunal was constituted under Annex VII of UNCLOS and it was decided in July 2013 that the Permanent Court of Arbitration (PCA) would function as registry and provide administrative duties in the proceedings. On 12 July 2016, the arbitrators of the tribunal of PCA agreed unanimously with the Philippines. They concluded in the award that there was no evidence that China had historically exercised exclusive control over the waters or resources, hence there was "no legal basis for China to claim historic