If Israel attacks Iran the entire Arab and Islamic world would be united on the Iranian side with an enormous hate and hostility against Israel. It looks like the Gulf States, Saudi Arabia and Iran will be provoked against each other and a war will outbreak in the region either on Shia and Sunni or Arab and Persian basis. The latest would be even more harmful for Iran because of 20 million Azerbaijani Turks may not want to be with the Persians in such a war.
British foreign secretary: There is no immediate threat to Europe from ISIS bases in Libya (Reuters)
from the article: Iran opens ten-day military exercise in the Persian Gulf