BERLIN, May 28 - Prime Minister Arseniy Yatseniuk called on Russia Wednesday to block the border to Ukraine to stop Russian militants from entering the country where they join rebel forces and fight the government’s troops.

Yatseniuk said Kiev could solve the crisis in Donetsk and Luhansk regions quickly if Moscow stopped meddling in the situation, BBC reported.

Speaking on a visit to Germany, Yatseniuk said the situation in the east was deteriorating and Russia's involvement was causing huge difficulties.