The nuclear weapons system is a red-line issue for the nationalist grassroots.
A new poll by Lord Ashcroft contradicts previous findings and shows that more than half of Scots believe Trident should be replaced.
The PM's decision to reject calls for a "viable cheaper option" represents an opportunity for Labour to woo the Lib Dems.
Nuclear weapons provide the illusion of security not the reality.
The shadow defence secretary quashes speculation: "we’re not a unilateralist party and we’re not about to become a unilateralist party".
A half-hearted commitment to renewal would make an easy concession to Lib Dems in future coailtion talks.
Spending £30-100bn on a new nuclear weapons system should be unthinkable when frontline forces are enduring dramatic cuts.
Johann Lamont’s silence on the crucial issue of the UK’s Clyde based nuclear deterrent is deafening.
The UK would struggle to find a new home for its nuclear weapons system.
We can't afford it - and the Labour Party must not shy away from discussing this at September's conf