In 1934, Stalin's "Popular Front" doctrine was not fully passed into the local party's politics, mainly due to the Soviet territorial policies (culminating in the 1939 Molotov–Ribbentrop Pact) and the widespread suspicion other left-wing forces maintained toward the Comintern. The Communists did, nevertheless, attempt to reach consensus with other groupings on several occasions (in 1934–1943, they established alliances with the Ploughmen's Front, the Hungarian People's Union, and the Socialist Peasants' Party), and small Communist groups became active in the leftist sections of mainstream parties. In 1934, Petre Constantinescu-Iași and other PCdR supporters created "Amicii URSS", a pro-Soviet group reaching out to intellectuals, itself banned later in the same year.