If it is HMGs policy to maintain the existing maximum warhead ceiling for each Polaris submarine for the remainder of their operational deployment; & what is MOD policy regarding the maximum warhead ceiling on the UKs ballistice missile-carrying submarines during the transitional phase from Polaris to Trident.

If it is HMGs policy to maintain the existing maximum warhead ceiling for each Polaris submarine for the remainder of their operational deployment; & what is MOD policy regarding the maximum warhead ceiling on the UKs ballistice missile-carrying submarines during the transitional phase from Polaris to Trident.

If the explosive power of the planned strategic warhead for the Trident missile will be similar to that of the existing Polaris warhead.

If the explosive power of the planned strategic warhead for the Trident missile will be similar to that of the existing Polaris warhead.

What studies MOD has undertaken to examine whether Trident could perform a sub-strategic nuclear role; & if Trident will be capable of performing a sub-strategic nuclear role. - Ref to 208 c187W.

What studies MOD has undertaken to examine whether Trident could perform a sub-strategic nuclear role; & if Trident will be capable of performing a sub-strategic nuclear role. - Ref to 208 c187W.

What plans his Department has to alter the level of warhead deployment for the United Kingdom's minimum strategic nuclear deterrent before the end of the century & if the criteria determining the level at which the deterrent is deployed will be different for Trident compared to Polaris.

What plans his Department has to alter the level of warhead deployment for the United Kingdom's minimum strategic nuclear deterrent before the end of the century & if the criteria determining the level at which the deterrent is deployed will be different for Trident compared to Polaris.

For how long the United Kingdom's strategic nuclear deterrent will be maintained by a combined force of Trident and Polaris submarines.

For how long the United Kingdom's strategic nuclear deterrent will be maintained by a combined force of Trident and Polaris submarines.

What criteria his Department will apply in determining the level at which the United Kingdom's strategic nuclear warheads will be deployed on the Trident fleet.

What criteria his Department will apply in determining the level at which the United Kingdom's strategic nuclear warheads will be deployed on the Trident fleet.

Further to paragraph 124 page 14, of "Statement on the Defence Estimates 1990" (Cm 1002) relating to Trident, what is HMGs policy on reductions in either no of Trident missiles or no of Trident warheads within context of multilateral arms negotiations. - Remains as set out in paragraph referred to.

Further to paragraph 124 page 14, of "Statement on the Defence Estimates 1990" (Cm 1002) relating to Trident, what is HMGs policy on reductions in either no of Trident missiles or no of Trident warheads within context of multilateral arms negotiations. - Remains as set out in paragraph referred to.

What implications deployment of additional Soviet ballistic missile defences, beyond those permitted under terms of anti-ballistic missile treaty, would have for effectiveness of UK strategic nuclear deterrent.

What implications deployment of additional Soviet ballistic missile defences, beyond those permitted under terms of anti-ballistic missile treaty, would have for effectiveness of UK strategic nuclear deterrent.

What assessment has been made as to implications for Trident programme of successful completion of next stage of CFE talks (CFE II). - Includes ref to para 215 of Statement on the Defence Estimates 1989 (Cm 675-1).

What assessment has been made as to implications for Trident programme of successful completion of next stage of CFE talks (CFE II). - Includes ref to para 215 of Statement on the Defence Estimates 1989 (Cm 675-1).