London Telegraph 
Feb 5, 2011
The US secretly agreed to give the Russians sensitive information on Britain’s nuclear deterrent to persuade them to sign a key treaty.
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.