Information about every Trident missile the US supplies to Britain will be given to Russia as part of an arms control deal signed by President Barack Obama next week.

Defence analysts claim the agreement risks undermining Britain’s policy of refusing to confirm the exact size of its nuclear arsenal.

The fact that the Americans used British nuclear secrets as a bargaining chip also sheds new light on the so-called “special relationship”, which is shown often to be a one-sided affair by US diplomatic communications obtained by the WikiLeaks website.

It is rather disappointing, especially when we need to start deescalating nuclear weapons, I thought we were over this.