Trident: How Important is an Independent Nuclear Deterrent?

Britain’s leader of the opposition, Jeremy Corbyn, has declared his opposition to the use and possession of nuclear weapons:

Specifically, he wants to discontinue Britain’s Trident nuclear program. Trident consists of four submarines, 58 Trident II D-5 ballistic missiles, and 160 thermonuclear warheads. All together, Britain has the 5th largest nuclear program in the world:

How important is this program to Britain’s security? On this issue, I think both Corbyn and his critics have oversimplified matters a bit. The role nuclear weapons play is more complicated than both hawks and doves typically acknowledge.

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