The UN Security Council will vote tomorrow on a resolution to allow aid access at four border crossings into rebel-held areas of Syria without government consent, said Western diplomats, who were hopeful Russia and China will support the move.

Australian UN Ambassador Gary Quinlan, who drafted the resolution, confirmed the final version of the text had been circulated.

Western diplomats admitted the resolution was not as ambitious as the initial text but the four crossings could allow delivery of humanitarian aid to nearly two million people.

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