Just like India & muslim Pakistan Israel has never signed the NPT. Iran though before the revolution the Shah did sign it so Iran is legally obligated to declare all its nuclear sites to inspections on demand. So legally Israel is allowed nukes and Iran is not as a result of decisions made by the leadership of each country. I suggest that next time you make a statement like this you should get your facts right first. The arabs are terrified of the idea of a nuclear Iran but for decades now they have known Israel had nukes and they are not worried about it because they know the rules of the game with Israel you destroy us and we will take you with us but leave us alone & we will leave you alone. Iran though doesn't play by those rules and thats what scares the arabs. The saudis have been trying to pressure Obama into bombing Irans nuclear sites because like Israel they dont think diplomacy is working.
Law expanding definition of terrorist activity passes first Knesset reading (Haaretz)
from the article: Syria to Palestinians: Quit Mideast peace talks, resume violence