Ukrainian nationalists attempt to march
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Leave Ukraine in peace, John Kerry urges Russia

30 April 2014 Last updated at 09:39 BST

The US has urged Russia to "leave Ukraine in peace" and warned that "every inch" of Nato territory will be defended if threatened.

US Secretary of State John Kerry said that Russia had failed to abide by the terms of a de-escalation agreement.

Mariko Oi reports.

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