Britain, France and the US are to table a resolution in the UN Security Council regarding Syria's chemical weapons later today, the Prime Minister has said.
The announcement follows talks between the leaders of the three countries today.
Mr Cameron added that Russia's proposal for Syria to hand over its chemical weapons needed to be tested, as well as being subject to a deadline.
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Overnight it will be cooler and fresher but most places will stay dry with a nippy start to Sunday.