British Prime Minister David Cameron arrives at 10 Downing Street
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Syria crisis: Reports and analysis

The UK is to put a resolution to the UN Security Council later on Wednesday "authorising necessary measures to protect civilians" in Syria.

The resolution will be put forward at a meeting of the five permanent members of the council, UK Prime Minister David Cameron said on Twitter.

Earlier a team of UN weapons inspectors resumed work probing an alleged chemical weapons attack on 21 August.