It is not clear if Syrian rebel groups will also cease fire during the daily three-hour window.

But UN officials say that is too short to take in enough to help the large numbers of people in need.

Intense fighting has been continuing in Aleppo between rebels and Russian-backed Syrian government forces.

All Russian military action, air and artillery strikes was being halted between 10:00 (07:00 GMT) and 13:00, a defence ministry official told a briefing in Moscow on Wednesday.

(BBC News)