Let me be more precise. One is enough to start a war and iran is a imperial local power that is constantly attacking its surrounding region with proxxies. The idea that only the mighty and resourceful can start wars is ridiculous. germany was an underdog in a jonny come lately situation compared to the french and British empire and started two wars. Same is happening here. Asymetric agressor can still be an agressor.
Same as the Ukrainian had the audacity to act as a sovereign nation and seek membership of alliances that benefited themselves.