Ahmedinejad's said some stupid things in his time, but so have Israeli leaders - remember the shoah on Gaza, and the endless threats to bomb Iran. Of course, also Ahmedinejad hasn't actually killed anybody, except maybe a few Iranians, whereas Israel has killed thousands of its neighbours over the years. My gut instinct is that while most UN member states probably aren't very keen on Ahmedinejad, they're probably even less keen on Israel's new hardline government. Want to put that to the test?
Shaffir to Herzog: Opposition failed to show leadership in political battles against PM (Haaretz)
from the article: WJC: World must boycott Ahmadinejad speech at UN