The United States Assistant Secretary of State Victoria Nuland and Ukraine's U.S. Ambassador Geoffrey Pyatt were recorded during a private conversation about Ukraine which was uploaded to YouTube on Thursday, according to the Associated Press.
At one point,Nuland mentions the United Nations and their role in aiding to put an end to the Ukraine protests that have been ongoing for the past 10 months, the AP reported.
Nuland can be heard saying: "So that would be great, I think, to help glue this thing and have the UN help glue it and you know" followed by a graphic word describe to Europe.
Pyat replies: "We've got to do something to make it stick together, because you can be pretty sure that if it does start to gain altitude the Russians will be working behind the scenes to try to torpedo it."
The video runs a little over four minutes and has been transcribed into Russian, the AP reported. The video is titled "Maidan's puppets" in Russian in regards to the Maidan Nezalezhnosti square in the capital.
Nuland has since "apologized for these reported comments".
In a conversation the two officials believed to be private, they also talk about the three main Ukrainian opposition leaders - Vitaly Klitschko, Arseniy Yatseniuk and Oleh Tyahnybok, according to the AP.
Nuland says Klitschko, a former heavyweight boxing world champion, should not be involved in government, saying "I don't think it's a good idea," the AP reported. Nuland adds she thinks "Yats (Arseniy Yatseniuk) is the guy who's got the economic experience."
U.S. officials declined to comment on the tapes authenticity and Jan Psaki, spokeswoman for the Department of State, said: "I didn't say it was inauthentic," the AP reported.
Psaki did say Nuland is "in contact with her EU counterparts and of course has apologised for these reported comments," according to the AP.