(All speculation from the depths if my imagination)
Worse case scenario:
Israel / backed by the U.S., Britain, and France strikes Iran's AAA sites, radar, and forward airfields, missile batteries as a diversion.
Simultaneously cyber warfare viruses (such as Stuxnet, and Flame) / special forces / moles have already infiltrated the nuclear reactor sites and shut
them down and are extracted out.
The bombers finish off the job by bombing the facilities not with the intent to destroy, but to create massive amounts of rubble to bury the sites in
order to make them inaccesible for years to come.
Iran counter attacks by launching missiles at Nato/UN bases within the range of their missiles and oilfields in Saudi Arabia. Most of them are
deflected by some secret technology, or destroyed by patriots and the anti missile defense shied, but a few slip through to their targets inflicting
massive damage and casualties.
Iran attempts to setup a blockade in the straight of Hormuz, but the Allied forces expected that and their fast attack subs make short work of the
Iranian naval assets that attempt to establish the blockade.
Iran launches silkworm and other anti shipping missiles at Allied naval assets, but most are out of range, yet they manage to hit and cripple a few
support ships inflicting casualties and damage, and sink one ship.
Sleeper cells embedded within the countries that have attacked Iran, are activated after learning of the attack and unleash massive attacks on soft
civilian targets and manage to pull off a few on military bases within the Allied countries the rest are thwarted.
Open war is declared by both sides. Hezbollah launches massive rocket and missile attacks into Israel. Syria launches chemical weapons into Israel.
Egypt surprises all and launches air raids into Israel.
Saudia Arabia and Turkey responds to attacks within their soil and launches attacks into Iran.
Turkey, Iraq, Kuwait, and Pakistan are flooded with refugees trying to escape the conflict. Turkey and Iraq eventually closes their borders to Iran
after the attacks
Iran's leadership is hunted down and considered terrorists for ordering terrorist attacks on civilians in the Allied countries. More countries within
the UN respond and send troops, supplies, and first aid into the war zone.
Israel feeling backed into a corner by the massive counter attack, responds by launching tactical neutron bombs into Egypt eradicating their airfields
and into Syria's C&C headquarters attempting to minimizing civilian casualties but caused Russian and Chinese military causalities.
The use of neutron bombs causes an uproar amongst all nations especially Arab nations since they feel Israel and the Allies started the conflict by
attacking Iran. Israel's stance is that they did not attack Egypt and they surprise attacked us and Syria attacked with chemical weapons, so they
argue that the response is justified.
Russia and China no longer stand by watching and feel compelled to join since Israel is using neutron weapons within such close proximity of their
forces stationed in Syria in a peace keeping mission.
Give or take a detail or two.
edit on 24-7-2012 by majesticgent because: (no reason given)