Their disagreement is whether the term "wipe" (away or off) is used as opposed to "vanish". There is no dispute about the fact that what is predicted to be wiped or to vanish is not Israel, or Jews, but the political "regime in Jerusalem", which are entirely different things.

And there is no dispute from the Iranian translators about Ahmadinejad's meaning - that he is predicting that it will happen, rather than threatening to make it happen.

It is quite obvious to anyone who isn't trying to spread lies about Iran for the purpose of drumming up support for an attack on that country, that Ahmadinejad is saying that the "regime" (government) of Israel is going to cease to exist at some point in the future, without any help from Iran, and that he, Ahmadinejad, sees that as a good thing.