His latest rhetoric regarding Israel is quite abhorrent.
It is if you believe the inaccurate reporting of it. Here, for example, is the AP article being reprinted in hundreds of newspapers:
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Iran: Israel's existence 'insult to all humanity'
Associated Press
TEHRAN, Iran (AP) — Israel's existence is an "insult to all humanity," Iran's president said Friday in one of his sharpest attacks yet against the Jewish state, as Israel openly debates whether to attack Iran over its nuclear program.
Mahmoud Ahmadinejad said confronting Israel is an effort to "protect the dignity of all human beings."
"The existence of the Zionist regime is an insult to all humanity," Ahmadinejad said.
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Note that AP conflates "the Zionist regime" with "Israel". "The Zionist regime" is a reference to the belief in current Israeli government that Israel has the right to expand beyond the 1967 borders.
AP's irresponsible reporting is like taking the Obama administration's line that "Assad needs to go" and reporting it as "Obama: 'Destroy Syria'".
With any reports on the Middle East, it's imperative that you pay attention to where the quote begins and ends, and that the reporter is using a reliable translation. This all started with the infamous - and extremely false - "face of the map" quote that was (a) misquoted (the Farsi word for 'map' is not in the actual words spoken); (b) reported without context (Ahmadinijad was quoting a previous leader, not making an original statement); (c) also a reference to the regime and not to the country itself.