The United Kingdom faces the "disastrous" prospect of losing its Trident nuclear deterrent and its permanent seat on the United Nations security council if Scotland votes for independence, the former prime minister Sir John Major has warned.
Jack Straw, the former British foreign secretary, said his instinct was that it would be right for Britain to join the US air strikes against Islamic State (Isis) in Iraq, saying there were legal grounds to do so.
David Cameron's plan to fight the terrorist threat posed by Islamic State got off to a stuttering start when he was forced to shelve key proposals amid legal uncertainty, Liberal Democrat objections, and even doubts within the security services.
Hostile foreign states have used cyberwarfare to attack and map the networks that are part of the country's critical national infrastructure, the government has admitted.
David Cameron has defended British arms sales to Gulf countries as "entirely legitimate" but insisted that the Arab spring was a positive development and there were no "no-go areas" in talks with autocratic allies who are fretting about changes elsewhere in the region.