"By supporting the Armed Forces of Ukraine "to build the capacity of its forces", de facto, the U.S. will become a party to the 'Ukraine's internal' conflict," Kosachev said.

Read alsoSenator McCain calls on Trump to provide lethal aid for UkraineAs UNIAN reported earlier, following a meeting with Ukraine's Foreign Minister Pavlo Klimkin in Washington Wednesday, Deputy Defense Secretary Bob Work said that the United States would continue to support the buildup of the capacity of Ukraine's forces.