Dr Tom van Doorsslaere and Dr Giovanni Lapenta from Katholieke Universiteit Leuven say the plane was travelling too fast for Turkey's account and could not do the 90 degree turn Russia claims it did
Two men died after a Syrian Arab Army shell hit an Ajnad al-Sham controlled area
The group said they were attacking the Hmeymim air base in response to Russian air strikes against Islamist targets
Smoking has been banned under a strict interpretation of traditional Islamic law
It comes after widespread anger among Shadow Cabinet ministers over Jeremy Corbyn's handling of the party's position on military action in Syria
'Why did we give this information to the Americans if they did not pass it along to the rest of the coalition?'
The Prime Minister outlines the case for Syrian air strikes: It can't do any harm.
'Keep out!' he warned MPs during a debate in Parliament
'The survey did not distinguish between those who go to fight for Islamic State and those who join other factions in Syria'
The Prime Minister said air strikes in Syria were a 'vital element' in defeating Isis and an important step to ensure Britain does not 'subtract' its national security to its allies
A vote on airstrikes could take place as soon as next week
There are two key problems with Monday's "shock poll" - and against this background it seems rather less shocking
The missile cruiser Moskva is one of Russia's two biggest vessels in the Black Sea Fleet
The Chechen leader, who keeps a tiger as a pet, called Turkey's shooting down of a Russian jet 'underhanded'
President Vladimir Putin branded Turkey 'accomplices of terrorists' and warned of 'serious consequences'
Britain's policy in Syria and Iraq depends on two partners on the ground: the Iraqi army and the moderate Syrian opposition to Assad and Isis. But the former is weak and the latter barely exists. Patrick Cockburn reports