He took this ethic with him when he worked with Malevich in the art group UNOVIS and when he worked his own. He took up a job as the Russian cultural ambassador to Weimar Germany. There he worked with important figures of the Bauhaus and De Stijl movements. In his remaining years he brought innovation and change to typography, exhibition design, photomontage, and book design. He produced critically respected works and won international acclaim for his exhibition design. This continued to the end of his life. In 1941 he produced one of his last works – a Soviet propaganda poster rallying the people to make more tanks for the fight against Nazi Germany.