Anton Adriaan Mussert (Dutch pronunciation: [ˈɑntɔn ˈmʏsərt];[1] 11 May 1894 – 7 May 1946) was a Dutch politician who co-founded the National Socialist Movement in the Netherlands (NSB) in 1931 and served as its leader until the party was banned in 1945. As such, he was the most prominent Dutch leader of the National Socialism movement before and during World War II. Mussert collaborated with the German occupation government, but was granted little actual power and held the nominal title of Leid