Vladimir Zelensky says basic questions in the security guarantee deal with the US "remain unsolved" MOSCOW, February 12. /TASS/. The Kiev government may agree to withdraw its forces from Donbass, Vladimir Zelensky’s advisers told The Atlantic . Two of his advisers told the magazine that Ukraine "may be ready to accept the hardest concession of all: giving up control of land" in Donbass. To legitimize such a compromise, the Kiev government is examining the possibility of holding a referendum