MOSCOW—A heavy gunbattle erupted early on June 2 morning in the eastern Ukrainian region of Luhansk, as hundreds of pro-Russian separatists attempted to overrun a Ukrainian border guard outpost, officials said.
Russia's War Against Ukraine
Wall Street Journal: Heavy gunbattle erupts at Ukrainian border guard outpost
A pro-Russian militant looks through binoculars, heavy gunfire erupted early on June 2 morning in Luhansk.