You're reading: Washington says Russia responsible for growing tensions in Ukraine’s east

WASHINGTON – Washington expressed concerns over the latest worsening of the developments in the eastern Ukraine, U.S. Department of State Spokesperson Marie Harf said at a briefing.

“We are disturbed by reports, including those from the OSCE that combined Russian-separatist forces launched coordinated attacks overnight against Ukrainian positions near Donetsk – near Donetsk city in Pisky, Luhansk, and Maryinka,” she said.

According to her, the separatists reportedly utilized Grad rockets and other heavy weapons that should have been withdrawn under the February Minsk plan.

“They’ve [separatists] reportedly killed at least one and injured 20 Ukrainians. Any new attack or aggressive action by combined Russian-separatist forces is unacceptable and contravenes the Minsk agreements. Russia bears direct responsibility for preventing these attacks and implementing a ceasefire. Any attempts to seize additional Ukrainian territory will be met with increased costs,” Harf stressed.