The Republic of Cyprus has ''de jure'' sovereignty over the entire island, including its territorial waters and exclusive economic zone, with the exception of the Sovereign Base Areas of Akrotiri and Dhekelia, which remain under the UK's control according to the London and Zürich Agreements. However, the Republic of Cyprus is de facto partitioned into two main parts: the area under the effective control of the Republic, located in the south and west and comprising about 59% of the island's area, and the north, administered by the self-declared Turkish Republic of Northern Cyprus, covering about 36% of the island's area. Another nearly 4% of the island's area is covered by the UN buffer zone. The international community considers the northern part of the island to be territory of the Republic of Cyprus occupied by Turkish forces. The occupation is viewed as illegal under international law and amounting to illegal occupation of EU territory since Cyprus became a member of the European Union.