US Assistant Secretary of State for European and Eurasian Affairs Victoria Nuland and US Ambassador Geoffrey Pyatt
Media playback is unsupported on your device

Ukraine crisis: Leaked US phone call appears online

6 February 2014 Last updated at 23:02 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.

The US said Ms Nuland had "apologised for these reported comments".

The EU and US are involved in talks to end months of unrest in Ukraine.

Mark Mardell reports.