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Prime Minister David Cameron will travel to Paris on Monday morning to discuss the fight against terrorism with the French President, a Downing Street spokesman said.
He will meet Francois Hollande at the Elysée.
It comes after the United Nations Security Council backed a French-sponsored resolution designed "to combat by all means this unprecedented threat".
David Cameron is displaying a "sad attitude" in his bid to see Britain join military action in Syria and must seek a UN mandate to take part in any air strikes, former Scottish First Minister Alex Salmond has told ITV News.
Mr Salmond, the SNP's foreign affairs spokesman, said it was vital Britain did not act without a UN security council resolution over the air strikes.
He told Deputy Political Editor Chris Ship his party was "always willing to listen" to the case for supporting military action against Islamic State.
Half of Britons would now support sending British troops in to a ground war against so-called Islamic State, according to a new survey.
The ComRes poll for the Daily Mail found that 50% would back such action, while 31% would oppose it.
It also found that the support rose to 59% if that military action were alongside countries such as the United States and France, and 68% if it were the UN sending forces.
Support for air strikes against the militants stood at 60%, against 24% in opposition.
The survey, carried out in the wake of the Paris terror attacks, also found that 53% would back a ban on migrants from Europe settling in the UK permanently.
Meanwhile, 79% supported an end to the freedom of movement which currently allows people to pass through all EU countries without border checks.
There is a "legal basis" for Britain taking military action against so-called Islamic State in Syria, Foreign Secretary Philip Hammond said.
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David Cameron has revealed he will "make the case" for Britain to join its allies in tackling Islamic State in Syria, instead of just Iraq.
The Chancellor has said the government will only call a vote on UK military action in Syria when it is "confident that we are going to win".