"We have no other alternative but to win," Turchynov said in an interview with the BBC.
"Last year was the first when we did not surrender one meter of our soil. On the contrary, we gained dozens of kilometers," he said.
"Therefore, I believe that our task is to move east, meter by meter, kilometer per kilometer, minimizing our losses," the NSDC secretary said.
"The main thing is not to leave our own border behind," Turchynov added, jokingly.
Earlier, Ukrainian Interior Minister Arsen Avakov said that the Ukrainian security forces should already be ready for the return of the occupied territories of Donbas.