US and UK officials said there is limited but growing evidence that Syria possesses chemical weapons. Deployment of British troops is unlikely, David Cameron has said.
Cameron is under increasing pressure to defy the current EU arms embargo on Syria following new evidence of atrocities in the country.
Read the foreign secretary's statement in full to the Commons on Gaza and Syria here
Foreign secretary William Hague has announced the UK will formally recognise the Syrian opposition as the country's legitimate government.
Human rights groups have reacted angrily at the news the government is trying to return asylum seekers to Syria, despite the civil war in the country.
David Cameron agreed that the use of chemical weapons in Syria could trigger western intervention, following a telephone conversation with Barack Obama last night.
The Foreign Office may be about to change travel advice for Brits in Lebanon, after the Syria conflict threatened to spill over into the neighbouring state.
Read William Hague's statement promising new assistance to the rebels in Syria in full.
Western action in Syria could pour gas on the world's biggest bonfire.
David Cameron appeared to score a minor victory in his talks with Vladimir Putin yesterday, after the Russian president urged the courts to treat punk group Pussy Riot leniently.
Britain and Russia have "overcome" their differences, Dmitry Medvedev has claimed, amid growing tensions over the fate of Syria - and a Russian punk group.
The UK needs to change its Middle East strategy in response to the Arab Spring, an influential committee of MPs said today.
Foreign secretary William Hague has vowed to bring justice to Syria after the publication of a report exposing a state policy of torture in over 27 detention centres.
The UK dramatically intervened to prevent a Russian ship from delivering missiles and helicopters to Syria last night, according to reports.
No options should be off the table when it comes to addressing the violence in Syria, according to foreign secretary William Hague.
Senior Syrian officials could be denied entrance to Britain for the Olympic Games, after reports emerged of atrocities against children.
Britain's foreign secretary has demanded "indisputable signs of change" from the Syrian regime as the UN prepares to send in monitors.
As the regime of Bashar al-Assad begins to lose its grip in Damascus, an important minority is being overlooked that might yet play a significant political role.
Progress could be made against Bashar al-Assad's regime even if it refuses to accept Kofi Annan's six-point plan, UK politicians are hoping.
David Cameron noticeably toughened up his rhetoric on Syria today, saying President Bashar al-Assad's "day of reckoning will come".
Former United Nations secretary general and joint UN-Arab League envoy on Syria Kofi Annan says the international community must unite in condemnation of the regime's behaviour
Foreign secretary William Hague announces that, despite the withdrawal of diplomats from Syria, he is still fully supportive of peace efforts.
Shadow foreign secretary Douglas Alexander responds to news of the Assad regime's crackdown in Homs by emphasises that those responsible for crimes must be held accountable.
Security concerns are forcing Britain to withdraw its diplomatic staff from Syria, William Hague has said.
In the age of Leveson and Twitter, we still need professional correspondents to make sense of information.