What policy was pursued by the government of the USSR on the eve of the war with Germany, a non-attack treaty was signed?

On the eve of the start of the Great Patriotic War, the USSR had friendly relations with Germany. Many other world politicians warned Stalin of the danger a few days before the start of the attack. He knew about the war, but did not think that it would start so quickly and wanted to attack first. But it didn’t happen. Food support to the USSR is evidence of the friendly relations between the USSR and Germany until 1941. The last train with provisions to Germany a few hours before the Nazi attack.