Russian Prime Minister Dmitry Medvedev said on Friday that Ukraine must overcome a 'tectonic split' in the country that threatens the existence of the state, Russian news agencies reported.

Speaking at a meeting with his Belarussian counterpart, Medvedev said the appearance of European politicians at protests in Kiev against the government's decision to spurn a landmark EU deal in favour of closer ties with Russia, was "crude interference" in Ukraine's internal affairs.

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