Whether Netanyahu wants to end Iran’s nuclear program or replace its regime, they’re both risky propositions with little chance of success.

After striking back on Friday night, Iran launched a new wave of strikes toward Israel on Saturday morning. Now, the two countries continue to exchange deadly missiles and threats, with fatalities and injuries reported on both sides.

Trump distanced himself from direct involvement in Israel’s strikes. But Benjamin Netanyahu will need the U.S. president to finish the job.

The president had opposed Israeli action against Iran but came to believe that Israel had reason to act and that the U.S. would have to lend some support.

Israel and Iran exchanged fire for the fourth consecutive day on Monday, stocking fears of an all-out war with the potential to drag in others in the oil-rich region and force the US into a more hands-on stance.

They won’t be enriching. If they enrich, then we’re going to have to do it the other way,” Trump told reporters aboard Air Force One on Friday.