The UK has grounded all flights to and from Sharm el-Sheikh following intelligence that suggests a bomb may have downed the Russian airliner flight KGL9268 last week.
The Foreign Affairs Committee has warned David Cameron not to push ahead with a vote on launching air strikes against the Islamic State in Syria.
The US will send special forces into Syria to support rebel groups fighting the Islamic State, officials have revealed.
The Islamic State is the prime suspect for the bombing in the Turkish capital that killed nearly 100 people on Saturday, Turkish Prime Minister Ahmet Davutoglu says.
A second Russian military jet has violated Turkish airspace in a mission that Nato says “does not look like an accident”.