There are International Laws in place because of WW2 which prohibit leaders from calling for Genocide. Doing so is technically considered an act of war. Israel is a soveriegn nation, responding to Iran's public threats calling for an "Islamic bomb".
Israel would attack because of Iran's nuclear program, the long term financing of the Hezbollah guerrilas in Syria/Lebanon, and State sponsoring the long range missiles which were recently employed by Palestinians located in the newly acquired strategic points of Gaza to hit civilian targets in central Israel, and just missing an Israeli power plants. ---- NOT for the insensitive remarks he's made. When the Malaysian PM made anti-semitic comments they didn't threaten to bomb Maylasia, you asswipe.
"BERLIN, Germany (AP) -- Germany's foreign minister described as "shocking and unacceptable" Wednesday the Iranian president's description of the Holocaust as a "myth," warning that Mahmoud Ahmadinejad's comments weighed on relations and talks over Iran's nuclear program."
http://www.cnn.com/2005/WORLD/meast/...el.germany.ap/