A major battle has erupted on the western edge of the main separatist rebel stronghold in eastern Ukraine, leaving more than a dozen people dead and threatening to tip the country back into full-blown war.
Russia's War Against Ukraine
Associated Press: Ukraine at risk of return to full war after major battle in Donetsk
Praviy Sektor (Right Sector) fighters take a rest at their headquarter in a small village near Pokrovskoe, eastern Ukraine on June 3.
