07:06Newsday31/03/2022 06:06 GMT : Russia promises to open humanitarian corridor in MariupolBBC World Service Duration: 50 minutes Thu 31st Mar 2022, 07:06 on BBC World Service East and Southern AfricaOfficials have said a 24-hour ceasefire will begin today. Show more GenresNewsFormatsMagazines & ReviewsBrandNewsday Source: BBC Online