Iran has attacked no-one for 400 years Yet is continually threatened by Israeli political leaders when their poll ratings begin to fall. It is generally accepted that Israel has nuclear weapons, netanyahu threatens Iran with attack every couple of weeks. Iranian leaders would be absolving themsselves of their responsibilities if they didn't pursue parity with Israel.
Australian police arrest 5 over shooting 'linked to terrorism' (Reuters)
from the article: An inside look at the base where Iran is developing nuclear weapons