Which of the following V-fighters was known for dropping live nuclear weapons?

The Valiant was a key aircraft in the UK's strategic nuclear deterrent force during the Cold War and is notably recognized for being the first of the V-bombers capable of carrying and delivering live nuclear weapons. As part of the V-force, which included the Vulcan and Victor, the Valiant played a crucial role in the UK's nuclear strategy, particularly in the 1950s and 1960s.

The Valiant was designed to be a long-range bomber and was utilized effectively for this purpose, with its capacity to carry free-fall nuclear bombs including the Blue Danube and later the Red Beard. Its role in the British nuclear deterrent established the foundation for subsequent defense strategies.

In contrast, while the Vulcan and Victor were also significant as part of the V-force and contributed to the UK's air-to-air and nuclear capabilities, the explicit design and operational history of the Valiant are most closely tied to the delivery of live nuclear weapons. The Viking, on the other hand, was a different type of aircraft primarily intended for maritime patrol and did not have a role in nuclear bombing.