Ukraine crisis: Russian aid convoy halts near border

Heavy shelling has hit the rebel-held Ukrainian city of Donetsk, amid a continuing row over a controversial Russian aid convoy.

People poured out of offices in the city centre after an evacuation warning sounded. At least one person has died.

Donetsk has been surrounded for several weeks by Ukrainian forces battling pro-Russian rebels.

The BBC's Moscow correspondent Steve Rosenberg reports from where the huge aid convoy has halted - a Russian town 20 miles from the Ukrainian-Russian border.