If they were even fractionally capable of this kind of effort, Israel would have ceased to exist long ago. You might want to incorporate one equation into your calculus: we hold nuclear weapons but would not nuke Mecca or Damascus or Baghdad as suicide murderers slaughter scores of our citizenry, but if the jihadis were to mobilize more than the proxy Palestinians to do their dirty work in Israel, the Israelis would use their nukes that way. Never underestimate the bloodlust of the radical Islamics, for if we were nuetralized, they would instantly turn to Tel Aviv as a next target, willingly sacrificing millions of fellow Arabs to eliminate Israel and then rule the world in Sharia law. Do you think the French would stand up to them? hardly
That's been their goal for as long as I can remember, and that's my point. Even a billion muslims can't crush a tiny Western nation like Israel.
Not at the present. But they have in the past, remember Charles Martel and the Moors at Tours.