Iran (Persia) has not attacked another country in over 2000 years. It has no strategic interests or territorial greed to infer even a hint that it would start a war with anybody. It has a neighbor (Israel) that is the epitome of a militaristic and belligerant nation. Only sensible that Iran prepare defenses. Between Israel and Iran, there's enough hot air threats to sell 10 million newspapers - but one doesn't go about killing thousands of people because of bully-talk. No?
U.S. says working on initiative to de-escalate Syria fighting, with focus on Aleppo (Reuters)
from the article: Cries of 'hold me back' may lead Israel to strike Iran