REUTERS

"The Donbas has seen the movement of military hardware,” Lysenko said.

“The terrorists and Russian-backed insurgents are massing their manpower and equipment in the Novoazovskiy and Yasinuvatskiy districts of the Donetsk region.”

He said Russian military officers were attempting to set up a single command structure for the various anti-government armed groups in the Donbas conflict zone.

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"In the occupied territories [of Ukraine] Russian overseers are continuing to subordinate the insurgents to a united command center," Lysenko added.