After a stormy ten hour debate, the House of Commons have voted to join others such as France, the US and Russia in bombing targets in Syria. Some 397 MPs were in favour, and 223 against.
Earlier today Mr Cameron called on MPs to “answer the call from our allies” and take action against the “woman-raping, Muslim-murdering, medieval monsters” of IS, who he warned were “plotting to kill us and to radicalise our children right now”.
He said MPs faced a simple question: “Do we work with our allies to degrade and destroy this threat and do we go after these terrorists in their heartlands from where they are plotting to kill British people, or do we sit back and wait for them to attack us?”
Mr Cameron also said that in future the UK government would be referring to IS as Daesh as much as possible, because “this evil death cult is neither a true representation of Islam nor is it a state”.
Labour leader Jeremy Corbyn told MPs: “It is impossible to avoid the conclusion that the prime minister understands public opposition to his ill thought-out rush to war is growing – and wants to hold the vote before it slips from his hands.
“Whether it’s the lack of a strategy worth the name, the absence of credible ground troops, the missing diplomatic plan for a Syrian settlement, the failure to address the impact on the terrorist threat or the refugee crisis and civilian casualties.
“It’s become increasingly clear that the prime minister’s proposals for military action simply do not stack up.
The talking point of course will be Hilary Benn, the Shadow Foreign Secretary, who delivered a speech disagreeing with his leader. His speech below:
Whilst the debate progressed, anti-war protesters staged a demonstration outside Parliament, with one woman crawling under a lorry and refusing to move. She is reported to have been arrested.
Here are some of the public reactions on Twitter: