Officials said in a statement today that six militants were killed and three Ukrainian servicemen were injured in fighting overnight.
The fighting in Ukraine's east has escalated following the May 25 presidential election won by billionaire candy magnate Petro Poroshenko, with rebels launching an attack on a major airport and shooting down a government helicopter elsewhere
Hundreds of insurgents armed with automatic weapons and rocket-propelled grenades, today mounted a daylong siege of a border guards base on the outskirts of Luhansk.