On May 19, Ukrainian independent MP Andrii Derkach made public audio records of phone conversations from 2015 allegedly “with voices similar to those of” Joseph Biden and Petro Poroshenko, the US Vice-President and the President of Ukraine at the time. Derkach made his allegations at a press conference in Interfax-Ukraine, a branch of the Russian news agency Interfax, stating that the tapes “testify to the facts of international corruption and state treason at the highest state level.”

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