DONETSK, Ukraine — Armed pro-Russian rebels ambushed a Ukrainian military convoy transporting ammunition on the outskirts of the flashpoint city of Kramatorsk around 1 p.m. on May 13, killing seven paratroopers and wounding seven more. One rebel fighter was killed during the assault.

The Defense Ministry said that the heavily armed rebels fired rocket-propelled grenades and automatic weapons at the convoy of Ukrainian paratroopers near the village of Oktyabrske about 20 kilometers outside Kramatorsk.