DONETSK, Ukraine — Ukraine's president vowed vengeance in blood after 19 troops were killed in an insurgent rocket attack Friday, and residents of the rebel-held city of Donetsk began fleeing in large numbers for fear of a government siege.
The barrage of rocket fire just before sunrise at a base near the Russian border was a devastating setback for government forces, who had seemingly gained the upper hand last weekend when they pushed the pro-Russian fighters out of their stronghold city of Slovyansk. In addition to those killed, 93 soldiers were wounded, the Defense Ministry said.
"For every life of our soldiers, the militants will pay with tens and hundreds of their own," Ukrainian President Petro Poroshenko warned. "Not one terrorist will evade responsibility. Everybody will get what is coming to them."