What countries where involved in the arms race?

The arms race primarily involved the United States and the Soviet Union during the Cold War, as both nations competed to develop and stockpile nuclear weapons and advanced military technology. Other countries, such as the United Kingdom, France, and China, also participated to varying degrees, further complicating the global landscape of military power. This competition was characterized by significant investments in defense and a focus on technological advancements. The arms race had profound implications for international relations and global security.