In what years and in connection with what did the idea of creating a collective security system in Europe emerge?

The idea arose in Europe in the 30s in connection with the formation of aggressive fascist regimes in Germany, Italy, Romania, Hungary, which aimed to redistribute the spheres of influence in the world by unleashing a war. The key supporter of the creation of such a system was the Soviet Union, but the contradictions between the USSR and the countries of Western democracies did not allow them to combine efforts and prevent a world war.