Unverified footage appearing to show government strike on rebel area
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Syria crisis: UN weapons inspectors to return

Weapons inspectors from the United Nations are set to return to Syria amid claims from Russia that a report on the alleged use of chemical weapons is politicised, biased and one-sided.

Although the UN found the nerve agent sarin was used, it refused to apportion blame but a Russian minister says the Syrian government has presented "material evidence" that Syrian rebels carried out the attack.

Frank Gardner reports.

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