What events led to Cuba being such a dangerous part of the cold war in the early 1960s

In October 1962, the Soviet provision of ballistic missiles to Cuba led to the most dangerous Cold War confrontation between the United States and the Soviet Union and brought the world to the brink of nuclear war

The Cuba-Missile crisis

Explanation: During the cold war of 1960 between Russia and America, it was believed that the Russians used Cuba (a communist state as Russia) as a base to build missiles. Due to Cuba's proximity it was believed that every state could be affected if missiles were to be launched from Cuba. In addition, when Fidel seized powee, he took over American businesses. With these undercurrents of events, Cuba was seen as a greater threat.