Those were the independent tapes recorded by American authorities, released on order by an American court. I doubt it that the Israelis got the NSA to erase their files and furnish a completely made up one.
From the article:
The NSA on Tuesday released audiotapes of Israeli pilots and ground control speaking in Hebrew, along with English transcripts.
To sum up, you don't believe the American records on the incident. You don't believe Israeli records corroborating the account. You don't believe the only parties involved in the incident consider it resolved. Just what, in Odin's name, are you trying to get at here? While your concerns about the USS Liberty are heartwarming, I can't help but wonder more insidious motivations may be at play.
