By Sam Webb Protestors supporting Russia's intervention in Crimea have clashed with police at rallies across the Ukraine, as U.S. Secretary of State John Kerry and Russian Foreign Minister Sergey Lavrov met in Paris in another bid to calm tensions. In Donetsk, pro-Moscow protesters stormed the railway station and were blocking trains to Kiev and Lviv. At a demonstration in Kharkiv today there were banners urging 'Russia -Save us', and pleading for a referendum on joining Moscow. Scroll down for video Red flag: Pro-Russian activists rally in front of the Lenin monument in Kharkiv today, as Secretary of State John Kerry met his Russian counterpart today in Paris
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Demonstrators showed their allegiance at protests in Donetsk and Kharkiv
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The unrest came as John Kerry and Sergey Lavrov met in Paris
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Russia today set out demands for new federation with autonomous powers
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Statement: Pro-Russian @placeholder in Kharkiv outline their feelings on Russia's actions in the Ukraine
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'We can't see any other way to ensure the stable development of Ukraine but to sign a federal agreement,' Lavrov said, adding that he understood the @placeholder was open to the idea.
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The Russian leader, who initiated the call, asserted that Ukraine's government is allowing extremists to intimidate ethnic Russians and @placeholder-speaking civilians with impunity - something Ukraine insists is not happening.
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That call did little to reassure @placeholder officials that Russia is not planning to invade Ukraine after its annexation of Crimea that the west has condemned as illegal and a violation of Ukraine's sovereignty and territorial integrity.
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Belief: A woman protestors clutches religious iconography as she marches under the @placeholder flag