It has the potential to provoke protests that could imperil the lives of Israelis and Americans, interfere with Israel’s critical and growing strategic and economic cooperation with its Arab neighbors, destabilize Jordan and undermine Israeli-Palestinian security ties. It is a move that Mr. Netanyahu can hardly oppose — he recently called the idea “great” — but may soon come to regret.

Perhaps the most important — and counterintuitive — area where Mr. Netanyahu may come to miss Mr. Obama is the Iran nuclear deal. I have no doubt that Mr. Netanyahu’s opposition to the deal was sincere. But it is also true that the accord had real advantages for him. By vigorously opposing the deal, he was able to strengthen the negotiating position of the American administration and its partners and present himself to the Israeli public as the candidate of toughness and strength — while at the same time reaping the benefits of an agreement that his top military advisers acknowledge has effectively halted Iran’s nuclear program and most likely staved off a military conflict.

With Mr. Trump, Mr. Netanyahu now has an American partner who agrees with him that the deal is “disastrous” and threatens to blow it up. But if they kill an agreement the rest of the world believes is working, the United States and Israel will be blamed and isolated, other countries will refuse to reimpose the international sanctions that were necessary to secure the deal, and Iran will kick out inspectors and resume its frozen nuclear program. It would be supremely ironic, but not entirely surprising, if Mr. Trump started to take steps that recklessly threatened the nuclear deal, and Mr. Netanyahu ended up quietly urging him to keep it in place.

I’m sure that Mr. Netanyahu will be more comfortable with many of Mr. Trump’s policies and advisers than he was with Mr. Obama’s. At least initially — who knows how long Mr. Trump’s approach will remain consistent — Mr. Netanyahu will relish a partner in the White House who gives him apparently unconditional support.

But it is also worth remembering that in his long political career, there is little that Mr. Netanyahu has valued more than the predictability offered by the preservation of a secure status quo. Whatever he may have gained from Mr. Trump’s election, that is one thing he has almost certainly lost.