The fourth congress, held in July 1946, pointed to massive popular struggle as the only way to overthrow the regime, and stated the policies that would help the party lead that same popular movement. This, along with the consolidation of the clandestine work, was the main conclusion of the congress. A brief report of the conclusions of this congress were published by the Central Committee of the Communist Party of the Soviet Union. At this time, Álvaro Cunhal travelled to Yugoslavia with the aid of Bento de Jesus Caraça to improve relations with the Socialist Bloc. Later, in 1948, he travelled to the Soviet Union to speak with Mikhail Suslov, after which the bonds between the PCP and the International Communist Movement were re-established. Soon after returning from the Soviet Union, Cunhal was arrested by the PIDE.