Jørgen Nash (1920–2004) was a Danish artist, writer and central proponent of Situationism.He was born in Vejrum, Jutland, Denmark. From 1948 to 1951 he was involved with CoBrA. He went on to join the Situationist International. After the SPUR group was expelled from the Situationist International, they continued to do collaborative work, linking up with Wir in 1966 to form Geflecht. Sturm developed colorspatial anti-objects and had his first solo exhibition in the Galerie van de Loo, Munich.