A major concern of the western powers after the collapse of the soviet Union was who?

After the collapse of the Soviet Union, a major concern for Western powers was the potential instability in Eastern Europe and the former Soviet republics. There were fears about the rise of nationalism, ethnic conflicts, and the potential for nuclear proliferation, as many newly independent states inherited Soviet nuclear arsenals. Additionally, the West was apprehensive about Russia's political trajectory and the risk of a resurgence of authoritarianism under leaders like Vladimir Putin. Overall, ensuring a peaceful transition to democracy and stability in the region became a priority for Western nations.