The Integrated Review: What it says about nuclear weapons, China and Russia 16/03/2021, 11:58 am HMS Queen Elizabeth carrier strike group to the region on its maiden operational mission later this year (Jane Barlow/PA) The Integrated Review into the future of the UK’s foreign, defence and security policy has been published. Billed as the most radical reassessment of Britain’s place in the world since the end of the Cold War, here is what is contains: – What are the major changes? The Integrated Review commits to increasing the amount of nuclear warheads Britain has at its disposal to 260, reversing a move to reduce the stockpile to 180.