because she knows that the Arab world will remain silent in cas of an attack on Iran and give no help to her. Sunnis against Shiites, old historic conflict. The only country who would help Iran is Syria and their military might is bound by killing their citizens in the thousands and it does not look like they will stop sometime soon!
Mexico sentences five men to 697 years for killings of 11 women (AP)
from the article: Russia: Israeli military strike on Iran would be a grave mistake