A Polish magazine said Sunday it has obtained recordings of a conversation in which Foreign Minister Radek Sikorski says the country’s strong alliance with the U.S. “isn’t worth anything” and is “even harmful because it creates a false sense of security.”

In a short transcript of the conversation, a person identified as Sikorski by the magazine Wprost tells former finance minister, Jacek Rostowski, that Poles naively believe the U.S. bolsters their security. Using vulgar language, the person argues that such beliefs are nonsense, and that the Polish-U.S. alliance alienates the Russians and Germans.

There has been no official confirmation that it is Sikorski who speaks in the conversation.