Grant Shapps quits as international development minister amid claims he failed to act on allegations of bullying in the Tory youth wing, Downing Street says.
Senior ministers are expected to phone members of the opposition, as the government seeks to build support for possible air strikes over Syria.
Egyptian officials say they now think it is "90% likely" that there is a hidden chamber in King Tutankhamun's tomb.
The return of a topless rebel to Muslim Tunisia
Why Cyprus backs UK air strikes against Islamic State
Tony Blair tried to become stand-up comedian
Should powers station cooling towers be protected?
The English-born KGB agent whose story inspired a movie
Can Tyson Fury possibly stun Wladimir Klitschko?
Britain’s Davis Cup history
How well do you know your neighbours?