European security watchdog OSCE said on May 30 it had lost contact with a second team of monitors in Ukraine, two days after pro-Russia rebels claimed to have kidnapped four observers.
Russia's War Against Ukraine
NBC News: Second team of OSCE observers goes missing in east Ukraine
OSCE team was stopped by armed men in the town of Severodonetsk, about 60 miles north of the eastern city of Luhansk.