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Russia says EU 'against peace' as US backs new sanctions

The Russian Foreign Ministry said the European Union has "made its choice against" a peace process in Ukraine by approving tougher sanctions against Russia.

President Barack Obama said the United States will join the EU in imposing sanctions on Russia's financial, energy and defence sectors after Moscow sent troops into eastern Ukraine last month.

David Cameron has spoken to European leaders and agreed to push ahead with the sanctions by the end of the week, his spokesman has confirmed.

After the announcement the Russian rouble reached a new historic low against the dollar.

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PM: Nato must send 'strong' message about Ukraine

The Prime Minister has called on Nato members to send a "very clear, unified and strong message" in response to the crisis in Ukraine.

Speaking at a reception for the Nato Parliamentary Assembly at Downing Street, David Cameron said: "Members of Nato want and deserve real reassurance that our Article V commitments are rock solid."

Article V refers to one of the founding principles of the Nato alliance stating that if one of its members is attacked, it "shall be considered an attack against them all".

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