Day three of the Cuban Missile Crisis — Thursday 18 October 1962 — looks closely at what the Soviet Union had actually placed on Cuba. This episode explains the Soviet nuclear forces on the island: the medium-range ballistic missiles that could reach American cities, the shorter-range missiles, the troops sent to guard them, and the bombers and other weapons that formed part of the deployment. For Washington, the question was no longer whether missiles were there, but how many, how ready they were, and what else Moscow had sent.
The episode examines the evidence gathered by American intelligence — the photographs, the shipping records, and the reports from agents on the ground — and shows how analysts pieced together the scale of the Soviet build-up. It also explains why Khrushchev took such a risk: to protect Cuba from another American invasion, to redress the Soviet Union’s disadvantage in long-range missiles, and to force the United States to take Soviet power seriously.
For viewers, Day 3 matters because it sets out the military facts behind the political crisis. Understanding what was on Cuba — and what American planners believed was on Cuba — helps explain why the response was so urgent, and why the stakes were so high. The Soviet forces in Cuba were not a symbol; they were a working nuclear arsenal, ninety miles from Florida.