Trident

James Blitz

On its way out? A Trident submarine leaves Faslane naval base (Getty)

Does the US want Britain to renew its independent nuclear deterrent? The question is generating a certain amount of debate among security analysts on both sides of the Atlantic. Between now and 2016, the UK must take a decision on whether to spend £20bn building four new submarines to carry the Trident missile. David Cameron’s Conservatives are keenly committed to a like-for-like replacement, saying there can be no compromise with the UK’s ultimate security guarantee.

But there are a few discordant voices out there who are questioning whether it is really worth ploughing all this money into a renewed nuclear weapons capability when the UK is having to cut its conventional arsenal as much as it is. Would it not be better, ask some critics, if Britain shifted the billions of pounds of cash meant for Trident’s replacement and bought weapons it is far more likely to use and which will ensure it remains an effective ally of the US? Read more