They will continue deployment of offensive weapons systems, advanced defense systems (courtesy of Russia, France, and China), and, inevitably, nukes, and will advance their plan for using Syria and Lebanon (Hizbollah) to harass and eventually destroy Israel.
With Saudi Arabia oil-rich but otherwise relatively weak, they can cajole them into a "mutual defense" pact, funded with petrodollars and supplied by Russia, China, France, and Germany. Once this has been accomplished, they will be able to tell us to jump, and we will meekly ask "How high, Boss?".
Iran must be broken, we have no other choice.