Morocco has won support for its position from several African governments and from most of the Muslim world and Arab League. In both instances, recognitions have, over the past two decades, been extended and withdrawn according to changing international trends.  , no other member state of the United Nations has ever officially recognized Moroccan sovereignty over parts of Western Sahara. However, a number of countries have expressed their support for a future recognition of the Moroccan annexation of the territory as an autonomous part of the Kingdom. However the African Union's predecessor, the Organisation of African Unity, recognized in 1984 the Sahrawi Arab Democratic Republic as one of its full members, with the same status as Morocco, and Morocco protested by suspending its membership to the OAU. Morocco was readmitted in the African Union on 30 January 2017 by ensuring that the conflicting claims between Morocco and the SADR would be solved peacefully and stopping the extension of its exclusive military control by building additional walls. The African Union however has not issued any formal statement about the border separating the sovereign territories of Morocco and the SADR in Western Sahara, until their conflict is resolved. Instead, the African Union participates with the United Nations mission, in order to maintain a ceasefire and reach a peace agreement between its two members. The African Union provides peacekeepers to the UN peacekeeping mission, in order to control a buffer zone near the "de facto" border of walls built by Morocco, and this area still remains a no-man's-land only without permanent residents except temporary controls by UN military peacekeepers and some incursions of the Moroccan army. Western Sahara is located on the northwest coast in West Africa and on the cusp of North Africa, bordering the North Atlantic Ocean to the northwest, Morocco proper to the north-northeast, Algeria to the east-northeast, and Mauritania to the east and south. Among the most arid and inhospitable on the planet, the land along the coast is low flat desert and rises, especially in the north, to small mountains reaching up to on the eastern side. While the area can experience flash flooding in the spring, there are no permanent streams. At times, a cool off-shore current can produce fog and heavy dew. The interior experiences extreme summer heat, with average highs reaching in July and in August; during winter, days are still hot to very hot, with average highs from ; however, in the northern part of the territory, the thermometer may drop below at night and it can be freezing in December and in January, although this is rare.