On joining NATO , 15 % were for , 15 % were against .
Most said that they would not vote or it was difficult to answer ( in Donbass : 16 % for , 47 % against ) .
On joining NATO , 15 % were for , 15 % were against , and most said that they would not vote or it was difficult to answer ( in Donbass : 16 % for , 47 % against ) .