Rebels seek Russian help

Father and son enjoy a sunny day in Donetsk's Lenin squareDonetsk: An uneasy calm returned to the streets of Donetsk after the biggest battle of the pro-Russian separatist uprising in eastern Ukraine, a conflict transformed by the landslide election of a pro-European leader who vowed to crush the revolt.

Ukrainian aircraft and paratroopers killed more than 50 pro-Russian rebels in an assault that raged into a second day after a newly elected president vowed to crush the revolt in the east once and for all.