KYIV. Dec 27 (Interfax) - Kyiv's ban on rail and bus transportation Ukraine and Crimea is a temporary measure, a spokesman for the military operation in eastern Ukraine said on Saturday.

"There is a high probability of sabotage groups penetrating under the guise of local residents," Andriy Lysenko told a briefing in Kyiv.

"For this reason, in order to tighten control and protect civilians