Book excerpt: The period between the two World Wars is characterised in the arts by international networks that transcended political and ideological borders. A lively artistic exchange took place, stimulating constructive, expressionist, and fantastic tendencies. An increasingly important role was played by magazines that disseminated new positions. The outbreak of World War II abruptly interrupted these cosmopolitan art networks. This publication examines the fascinating, artistically fruitful epoch between the wars. Exhibition: Unteres Belvedere/Orangerie, Vienna, Austria (23.03.-26.08.2018) / BOZAR - Centre for Fine Arts, Brussels, Belgium (21.09.2018-20.01.2019). -- Publisher's website.