The National Socialist Movement in the Netherlands (Dutch: Nationaal-Socialistische Beweging in Nederland Dutch pronunciation: [natʃoˈnaːlsoʃaˈlɪstisə bəʋeːɣɪŋ ɪn neːdərlɑnt] NSB) was a Dutch fascist and later national socialist political party. As a parliamentary party participating in legislative elections the NSB had some success during the 1930s. It remained the only legal party in the Netherlands during most of the Second World War.