Twelve killed in Ukraine as Russia pounds rebel-claimed province

A Ukrainian serviceman looks at the rubble of a school that was destroyed some days ago during a missile strike in outskirts of Kharkiv (Andrii Marienko/AP)

Russian shelling has killed at least eight civilians in Ukraine over the past 24 hours and wounded 25 more, Ukrainian officials said.

Meanwhile, Pro-Russia separatists said attacks by Ukrainian forces have killed four civilians.