The UAE and Iran continue to dispute the ownership of three islands, Abu Musa and the Greater and Lesser Tunb Islands, which are strategically located in the Strait of Hormuz. All three islands were effectively occupied by Iranian troops in 1992. The Mubarak field, which is located six miles off Abu Musa, has been producing Oil and associated Natural Gas since 1974. In 1995, the Iranian Foreign Ministry claimed that the islands are an inseparable part of Iran. Iran rejected a 1996 proposal by the Gulf Cooperation Council (GCC) for the dispute to be resolved by the International Court of Justice, an option supported by the UAE. In early 1996, Iran took further moves to strengthen its hold on the disputed islands. These actions included starting up a power plant on Greater Tunb, opening an airport on Abu Musa, and announcing plans for construction of a new port on Abu Musa. In the dispute, the UAE has received strong support from the GCC, the United Nations, and the United States. Although Iran remains a continuing concern for officials in Abu Dhabi, they have chosen not to escalate the territorial dispute. Iran is one of Dubais major trading partners, accounting for 20 percent to 30 percent of Dubais business.