UN special envoy to Syria, Staffan de Mistura, is set to meet Russia’s foreign minister, Sergey Lavrov, on Tuesday, Foreign Ministry spokeswoman Maria Zakharova told Russian news agencies.

The two will mainly discuss efforts to salvage the already-stumbled cessation of hostilities in Syria.

De Mistura wants Russia and the United States to work closely together in order to restore the truce they have brokered in February.

Earlier, the US lashed out on Russia for failing to rein in the Syrian Armed Forces near the northern city of Aleppo.

Hundreds, mostly civilians, have been recently killed in Aleppo as the anti-government radical militants intensified rocket attacks on government-held districts.