Excuse me, sir, it's common knowledge. I received the letter in German from the law firm which was representing me. When I saw the letter and I read the letter in that office, I called Mr. Mulroney, informed him about it, and Mr. Mulroney requested the translation from the lawyer in that office.
Then I left. Then the letters, in English, were sent to my lawyer, to Mr. Mulroney, to my other lawyers, and as far as I recall, there was even a lawsuit against the law firm Blum and Partner, in which they were accused of having leaked this letter to somebody. This was already in the Swiss media, but as far as I understand, this lawsuit finally collapsed. Maybe one can find out.