Medics treat victim of alleged chemical attack
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Syrians trade Khan al-Assal chemical weapons claims

Syrian rebels and the government have accused each other of firing chemical weapons, reportedly killing at least 25 people in the north of the country.

A Syrian minister said it was a "dangerous escalation" and the "first act" of a new rebel authority.

However, both a chemical weapons monitoring body and the US said there was no evidence they had been used.

Both sides say the attack happened in the Khan al-Assal region north of the second city, Aleppo.

James Reynolds reports.

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