The call was first referred to by an aid to the Russian deputy prime minister Dmitry Rogozin on Twitter.
The call, during which a female voice thought to be assistant secretary of state Victoria Newland says "F*** the EU", was posted on YouTube. The video shows pictures Nuland and the ambassador to the Ukraine Geoffrey Pyatt. White House spokesman Jay Carney said:
I would say that since the video was first noted and tweeted out by the Russian government, I think it says something about Russia's role.
The US state department spokeswoman said the top US diplomat for Europe, Victoria Nuland has apologised for reported comments made during what appears to be a leaked phone conversation.
In the audio, reportedly between Nuland and the US ambassador to the Ukraine Geoffrey Pyatt, a man and woman are heard discussing international efforts to resolve the crisis in the Ukraine. At one point the woman declares: "F*** the EU."
Despite not actually confirming that the voice was that of Victoria Nuland, the spokeswoman said Nuland "has been in contact with her EU counterparts and of course has apologised for these reported comments”.