Ukraine conflict: Many soldiers dead in 'rocket strike'

Ukrainian officials say, a rocket strike in the east Ukrainian region of Luhansk has killed at least 19 soldiers. 

They blame the attack on separatist rebels.  

They said rebels fired a barrage of Grad rockets at troops in a village near the Russian border.  

Ukrainian President Petro Poroshenko has vowed to retaliate.  

The country's defence ministry puts the number of troops killed at 23.  

It said, 19 of them died in the Grad attack while 93  others were wounded.  One of the rebel leaders, Oleg Tsaryov said the militants would not surrender, despite increased pressure from Ukrainian government forces.

Source: BBC