Personally im for more weapons testing.
A tactical nuclear weapon need not bring death to a 300mile radius
A tactical nuclear weapon could be developed to co-exist with existing technologies. Imagine a rather powerful grenade? Useful for battling against cave dwelling terrorists (afganistan), either they get killed, irradiated, or suffocate to death when the mouth of the cave collapses. No need to risk our boys lives in dingy caves.
Smaller bunker buster bombs. Can penetrate reinforced bunkers, and have a smaller payload yet equally powerful, Allowing more weight to be put into penetration mechanisms (more effective at busting bunkers).
The future isnt trident, nor cruise missiles. The future is smaller bombs, higher or the same rating of power, being more effective at what they do. Why use cluster bombs to clear airfields, use a small nuke to destroy the tarmac. Granted they will irradiate a large area and dust can be carried on the wind... but used sensibly they are as useful as the more usual payloads.
Re-open weapons testing on limited sized nuclear weapons. (No more super H bomb bollocks, lets actually think of a legitimate use for these weapons.)