Bibi's motive is less stopping Iranian enrichment than it is vindicating himself before history. He understands that, in the long run, Iran will be a nuclear power. It is precisely that inevitability that is driving his actions. If he goes to any length to try to prevent/delay that day, and someday Iran does threaten Israel with a bomb, Bibi's farsightedness will outshine whatever political collateral damage his heavy-handedness may cause now. If that day doesn't come for a long time, he will take the credit. There's no downside for him here, if you take history into account.
Bibi's motive is less stopping Iranian enrichment than it is vindicating himself before history. He understands that, in the long run, Iran will be a nuclear power. It is precisely that inevitability that is driving his actions. If he goes to any length to try to prevent/delay that day, and someday Iran does threaten Israel with a bomb, Bibi's farsightedness will outshine whatever political collateral damage his heavy-handedness may cause now. If that day doesn't come for a long time, he will take the credit. There's no downside for him here, if you take history into account.