 Complete the following phrase:  Wour  is a small town and oasis in the extreme north of Chad. It is the main town of the Wour sub-prefecture, which was formed in 2008 as one out of three in the Tibesti Region. Despite of its small size of only a few hundred inhabitants the whole sub-prefecture counting 1,498 people in 2009, Wour is a strategicall-important location in northern Chad. Wour has been fiercely fought over several times in recent history, especially in December 1986 during the 