The Sudans Nile within the Sudans has no significant tributaries. The amount of rainfall increases towards the south. In the north there is the very dry Nubian Desert; in the south there are swamps and rainforest. The Sudans’s rainy season lasts for about three months (July to September) in the north, and up to six months (June to November) in the south. The dry regions are plagued by sandstorms, known as haboob, which can completely block out the sun. In the northern and western semi-desert areas, people rely on the scant rainfall for basic agriculture and many are nomadic, travelling with their
Syrian Desert part in both the commercial and military connections between the two regions. It was, however, raided by the Sasanian emperor Shapur I in the 250s, most of its citizens fled, and under Sasanian rule, the city was subsequently abandoned. The desert was first traversed by motor vehicle in 1919. During the Iraq War, the desert served as a major supply line for the Iraqi resistance, with the Iraq portion of the desert becoming a primary stronghold of the Sunni resistance operating in the Al Anbar Governorate, particularly after the Coalition capture of Fallujah during the Second Battle of Fallujah. A