John Kerry doesn't seem to have a problem suing. Ask the Swift Boat group.
I repeat, is there a copy of the letter in Russian?
From the book source, "The Crusader - Ronald Reagan and the Fall of Communism," which is listed at the beginning of this thread:
The author, Paul Kengor, describes the Kennedy/Tunney/Soviet matter in Chapter 17, where he writes about the 1984 presidential campaign. I don't plan to type that entire chapter (go buy the book) but I did type up the "Notes" on the KGB letter referenced in chapter 17 and will add them below. If you want more information about what language the letter was in, I believe I've given you enough information to pursue that on you own.
Quote: Notes (full text) page 369
25. To the best of my knowledge, this book is the first full examination and presentation of the Chebrikov document. The document came from the Central Committee Archives of the Communist Party of the former USSR. There are a number of different archives from the Soviet period, including, for example, the KGB Archives, the Comintern Archives, among others. The archives were opened in the early 1990s by the Boris Yeltsin government, whereupon scholars and journalists eagerly began digging into the documents. The Yeltsin government, for various reasons, closed many of the archives, including the Central Committee Archives, in the 1994-95 period.
The document that I cite here was apparently initially found by a London Times reporter in early 1992. The London Sunday Times subsequently published an article on the document, titled “Teddy, the KGB and the top secret file,” in the February 2, 1992 edition. The Times article, however, was brief and included only a few quotes from the document; the newspaper published only a photo of a small section from the upper left corner of page one of the five page document. Once the Times piece ran, a number of people scrambled to the archives to obtain their own copy of the document, which then began circulating in and around Moscow. Various individuals obtained copies. Shortly thereafter, the Russian government closed the file.
Among those who obtained a full copy was Herb Romerstein, author of the seminal work on the Venona papers, The Verona Secrets. Romerstein is a former staff member of the U.S. House Permanent Select Committee on Intelligence and a seasoned veteran of archival research from the Cold War period. Romerstein continues to do research from intelligence archives of former Communist countries. My copy was obtained through Marko Suprun, who got the copy from Herb Romerstein and Walter Zaryckyj. Romerstein provided details to me on the document’s origin in a number of discussions in June 2005. Unquote.