We have this magic device called "radar" that is capable of tracking aircraft. It wouldn't be hard to tell where it came from. :)
The odds of an Iranian jet being allowed to get that close to Israeli airspace is exactly nil.
Thank you for noting my manliness, by the way. :P
Now you want a perfect world where its impossible for a terrorist to use a nuke? Well, that's what we are fighting the WOT for. You are correct there is less support for Israel today. you are not correct that the US wouldn't defend Israel, and of course Israel would defend itself. AND you are changing the subject now to an untraceable terror attack, which was NOT the original point.
No matter; plenty of our missiles already have it memorized...
And, if your "Tel Aviv" crater came to pass, the vast majority of Americans would consider anything longer than the flight time of an ICBM to be dragging our feet.
"Why would it necessarily have to be a missile? How about putting one on a passenger jet (whether the passengers know or not), flying over Tel Aviv, set for landing, and KABOOM! Quick decapitation of Israel's government and military structure.
Then what, tough guy?"
Almost all Western governments to the one have contigency plans and chain of command if the primary existing president, general or what not are taken out. What would happen is that Israeli jets stationed throughout the country would take off and launch nuclear armed missles at Iran. The country would more or less cease to exist. Every major military installation and city in Iran would be hit. The Iranian casualties would be in the tens of millions with many millions more perishing from lack of civilian necessities such as food/water and medicine, plus radiation casualties. The dilluded Iranian mullahs may indeed do this one day thinking allah will save them, when in fact this will be their final death sentence.