Leaked US call on Ukraine crisis: Excerpt
7 February 2014 Last updated at 09:54 GMT
An apparently bugged phone conversation in which a senior US diplomat disparages the EU over the Ukraine crisis has been posted online.
A voice resembling that of Assistant Secretary of State Victoria Nuland refers to the EU using a graphic swear word, in a conversation apparently with the US ambassador to Ukraine.
This excerpt from the call is explained by the BBC's Mark Mardell.