August 2013 Parliament recalled to discuss UK response to Syria A Syrian victim who allegedly suffered a chemical attack at Khan al-Assal village Following the confirmed use of chemical weapons against civilians near Damascus, Prime Minister David Cameron announces Parliament is being recalled to discuss the UK’s response to Syria.

August 2013 MPs reject military action in Syria After eight hours of parliamentary debate, MPs reject the government’s motion in support of military action in Syria. Following the vote, Mr Miliband said: “Military intervention is now off the agenda for Britain. There would have been nothing worse than intervention without full international support.”

September 2013 Miliband criticised for Syria position Former party leader Ed Miliband is criticised for hardening his position over Syria by saying that Labour would only support military action against the Assad regime if Britain’s national security was threatened. A concerned Labour MP said: “I am very worried that this could lead us to a position where Britain is not able to mount a military response if needed.”

September 2014 Cameron: “Strong case” for UK military intervention inSyria The Prime Minister says military intervention in Syria would be lawful on the grounds of intervening to prevent a humanitarian catastrophe. He adds the government would seek Parliamentary approval for the extension of air strikes against IS extremists in Iraq to Syria.

February 2015 UK to play a "leading role" in fight against IS The UK says that no decision had been made about how it would be involved in the fight against IS, but that it would play a "leading role".

June 2015 Britain moves a step closer to bombing IS targets in Syria A man prays after laying flowers on Marhaba beach where 38 people were killed Labour says it would consider backing any military response to the Tunisian beach shootings in which 30 Britons were killed by gunman Seifeddine Rezgui.

July 2015 Public learn that British pilots have been killing IS fighters British military pilots conduct air strikes over Syria for first time British ministers are accused of deceiving the public after it emerged that at least three Royal Navy pilots had been killing IS fighters in Syria, even though MPs voted against military action there.

August 2015 First targeted UK drone attack on a British citizen in Syria British jihadist boasts of fighters preparing for 'martyrdom' Cardiff-born Reyaad Khan, 21, and Ruhul Amin, from Aberdeen, are reported to have died in Raqqa, in the first targeted UK drone attack on a British citizen. In reference to Khan, David Cameron says: “There was a terrorist directing murder on our streets and no other means to stop him.”