Israel needs to develop a space based laser anti missile that can take out Iranian ICBM’s upon launch , thus detonating them over Iranian air space . They cannot rely on Iron Dome for a nuclear ICBM deterrent. Only if Iran knows that it will only be nuking itself will it be deterred . Obama’s presidency guarantees that Iran will get nukes and Israel’s air force is not large enough to take out Iran’s entire nuke development process in a single (day) of strikes .
The only other way out of all of this is to remove Obama from office and make an alliance with Israel and Russia and mount a joint attack on Iran on that basis
Anti-missile laser weapons do not detonate the warhead. They simply damage enough components it cannot function. Detonating a nuke is a very precise process (which is why it is so hard to build one); the laser does not “push the button”.