Russia's foreign minister says a unilateral truce declared by the Syrian military could be extended to the city of Aleppo "in the next few hours".
BBC: Russia hopes to extend truce to Aleppo
Syrians ride a motorbike past a collapsed building on which a graffiti reads \"Save Aleppo\" on April 30, 2016 in the central Syrian town of Talbisseh in the Homs province.
