MPs vote by 397 to 223 to authorise UK air strikes against so-called Islamic State in Syria
RAF Tornado jets carry out their first air strikes against IS in Syria, the Ministry of Defence confirms
Four RAF Tornado jets take off from RAF Akrotiri in Cyprus
During a 10-hour debate, David Cameron urged Tory MPs to 'take a stand' against IS
Jeremy Corbyn said the PM's case "does not add up" and could make the situation worse
Despite Tory rebels, PM was helped by votes of some Labour MPs, the Lib Dems and DUP
A separate cross-party amendment opposing airstrikes was defeated by 390 votes to 211
Conservative Mark Pritchard says this is a case of "kill or be killed", and that the UK should extend air strikes to Syria
He adds that "bullying and self interested unions" are trying to intimidate Labour MPs into voting against action.
He calls on Labour MPs to look at their "proud socialist history" and to vote for bombing.
Conservative MP Crispin Blunt criticises government for not including all terror groups
Former Labour cabinet minister
Yvette Cooper outlines why she will vote for air strikes despite unanswered questions
Labour's Yasmin Qureshi says extending air strikes to Syria "is not going to achieve anything" without a huge number of ground troops.
She says she would support the motion if she "genuinely believed" it would make a difference, but what MPs are voting on is a "symbolic" gesture.
She argues that there will never be peace in the middle east until the Israel Palestine conflict is resolved.
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According to the US Department of Defence, external, the following countries have participated alongside the US in coalition air strikes against IS in Iraq: Australia, Belgium, Canada, Denmark, France, Jordan, the Netherlands and the UK.
The US says these countries have carried out strikes against IS in Syria: Australia, Bahrain, Canada, France, Jordan, Saudi Arabia, Turkey and the United Arab Emirates (UAE).
Separately, Russia began carrying out air strikes in Syria in September 2015 after a request from Syrian President Bashar al-Assad, who has clung on to power despite more than four years of civil war
The BBC looks at where key countries in the region and beyond stand.
Email: haveyoursay@bbc.co.uk
Neil Fellows The statement by Mr Cameron yesterday that people who do not support air strikes in Syria are terrorist sympathisers has done two things in my eyes. It has lost him any respect I had for him, as well as my vote in future elections.
PareshMargaret Beckett may well have made a good speech, but whilst bringing up Kosovo and Sierra Leone as examples of how military actions can save lives and help end conflict, she forgot to add both of those examples involved UN troops intervening on the ground. That's not what they are proposing here!I can’t recall air strikes alone ever ending a conflict or directly saving lives.Can't believe how naive some MP's are if they think air strikes minus ground troops minus any political negotiation, will make us or Syrians safer.
Keith AraujoI think bombing Syria will worsen terrorist activity in this country and around the world. I find it hard to believe that after so many years no-one has been able to track down the money and arm suppliers to these extreme religious factions. There must be something to hide which is either directly or indirectly politically damaging.
haveyoursay@bbc.co.uk
Card Crafters
Causing conflict would be unnecessary and cause many civilians to be killed in the process. Surely improving our security and intelligence services would be more effective and provide long term safety? I hope those with the power to do so make the right choice.
Email: haveyoursay@bbc.co.uk
Isabel
Stop arming the rebels. The UK and others have fueled the Syrian civil and that has allowed ISIS to gain its stronghold in Syria. Assad's rule before the civil war created stability in an unstable part of the world. Russia's strategy is far better than ours. They are trying to stabilise Syria by supporting Assad. Turkey and Saudi are on the wrong side, stoking up the war, so they're poor allies. We should go with Russia or stay well out of it.
Email: haveyoursay@bbc.co.uk
Luke
Although I'm not against action in Syria, I personally believe that there needs to be a far greater commitment from the other UN nations before said action can take place. In my opinion the only way a threat such as the one in Syria and Iraq can be removed is through a huge coalition force using all its combined forces together.
Image source, APUS Senator John McCain has said British involvement in coalition air strikes against so-called IS in Syria will be of limited value. He told the BBC's Washington correspondent Jon Sopel it was good to have allies on board, "and then we can go to Geneva and say we are 30 nations, or 50 nations".
Quote MessageThen we will have some token aircraft over there from the British and they'll drop a few bombs, and we'll say thank you very much. The president will be able to say 'now we have the British who will be helping us', and that's good."
He said he wasn't saying that UK air strikes would achieve nothing, but added:
Quote MessageAir strikes alone won't win a conflict but it's good to have increased air strikes, it's good to have increased air activities, it's good to have shows of support from our British friends... So I'm glad of it, thank you, we appreciate it! But to say that it's going to make a significant difference, no I've got to be a little more candid than that."
Conservative Owen Paterson will support the government and vote for air strikes.
He argues that different ethnic and tribal groups in the region should be given more autonomy within existing national boundaries.
He says he sees the country operating as a "federation" after the conflict.
Image source, bbcLiberal Democrat Leader Tim Farron says he will support the government in the vote tonight.
He says this is "an incredibly tough call" but the United Nations resolution calling for action against IS swung his mind.
He adds that he spent time in refugee camps this summer where he met people fleeing IS, and we should do "everything in our power" to tackle "this evil death cult".
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Image source, APThe jihadist group Islamic State - also known as IS, ISIL and Deash - burst on to the international scene in 2014 when it seized large swathes of territory in Syria and Iraq. It has become notorious for its brutality, including mass killings, abductions and beheadings. The group though has attracted support elsewhere in the Muslim world - and a US-led coalition has vowed to destroy it.
Here's a guide to its origins, its aims, its funding and its tactics.
Conservative Cheryl Gillan says air strikes will reduce the threat to British citizens from IS.
She adds that "anyone saying a positive vote tonight will increase the danger here in the UK needs to wake up and realise the threat is already here".
The House of Commons debate on whether to give the green light to UK bombing of IS targets in Syria is to run for 10 hours, with voting expected from 22:00 GMT.
If you've missed what's been said already, or want to listen again, here are some of the key contributions so far, with more to be added as the debate continues.
House of Lords
Parliament
The day's sitting of the House of Lords begins with questions to the government. The debate on military action in Syria is due to begin at around 15:30 GMT. Former Foreign Secretary William Hague - now Lord Hague of Richmond - will make his maiden speech in the Lords as part of the debate. Former Liberal Democrat leader Lord Ashdown and former Army chief Lord Dannatt are also among the 70 peers who have put their names down to speak.
Democratic Unionist Leader Nigel Dodds says terrorism must be "fought with all the means realistically at our disposal."
He says we are "nearly at the top" of the terrorist hit list, and he believes action will "lessen the threat to British citizens".
He says the DUP will be supporting the government tonight.