What caused the Soviet Union to get involved in countries as diverse as Egypt the Congo and Vietnam?

The Soviet Union's involvement in countries like Egypt, the Congo, and Vietnam was driven by its desire to expand influence during the Cold War, support anti-colonial movements, and counter Western Imperialism. By backing revolutionary movements and socialist governments, the USSR aimed to spread communism and create strategic alliances. Additionally, these interventions were often seen as opportunities to gain access to resources and establish military footholds in geopolitically important regions. The competition with the United States for global dominance further motivated Soviet engagement in these diverse nations.