Civilians near Ukraine’s Slavyansk have blocked Ukrainian armored vehicles and troops from entering the city amid a Kiev offensive on separatist protesters.
Four people have been reported killed in a gun battle in restive eastern Ukraine, shattering a fragile Easter truce in the crisis-hit former Soviet republic.
Ukraine's government has sent security forces into the eastern city of Slaviansk where pro-Russian separatists have seized control in what Kiev describes as an act of aggression by the Kremlin.