In 1949, Wirth returned home, after being prevented from doing so by the French occupation authorities for four years. He opposed Konrad Adenauer's policy of Western integration, for fear of making the division of Germany permanent. Together with Wilhelm Elfes, he founded the neutralist "Alliance of Germans" (BdD) in 1953, that was also supported by the SED, and the newspaper "Deutsche Volkszeitung". Although Wirth did not approve of Stalin's policies, he believed in a compromise with the USSR in line with the Rapallo Treaty. In 1951, Wirth visited Moscow for political talks.