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US apology after EU Ukraine insult

7 February 2014 Last updated at 21:07 GMT

US official Victoria Nuland has apologised after she referred disparagingly to the EU's role in mediating the crisis in Ukraine during a conversation said to be with the US ambassador to the country.

A recording of the exchange was posted online, with the US hinting at Russia's involvement in bugging and leaking it.

The BBC's Rajesh Mirchandani reports.

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