President-elect Donald J. Trump hinted on Friday, via Twitter, that “things will be different after Jan. 20” at the United Nations.

He was reacting to President Barack Obama’s decision to betray Israel and to allow an anti-Israel resolution at the UN Security Council to pass. The resolution regards all Israeli settlement — including East Jerusalem, the Old City, and Hebron — as illegal. It was a sneak attack by lame-duck Obama. Here is what Trump may have in mind as a response.

1. Signing a congressional declaration that the UN Security Council resolution is not United States policy. Congress could quickly pass, and President Trump would sign, a declaration that the previous administration had no mandate to allow the UN Security Council resolution to pass. The declaration could affirm prior U.S. policy that some areas in the West Bank will always be under Israeli control — or it could even leave the status of the West Bank open to potential Israeli annexation.

2. Immediately move the U.S. embassy to Jerusalem. The Trump transition team has been hinting that moving the U.S. embassy would be a high priority. Now there is absolutely no reason to delay. The entire case against moving the embassy had been that the U.S. should not take unilateral action outside negotiations between the two parties. But Obama just undermined his own argument by unilaterally taking the Palestinians’ side over settlements. Moving the embassy is now a no-brainer.

3. Cut off funding to the Palestinian Authority. President Obama kept U.S. taxpayer dollars flowing to the Palestinians even though the Palestinian Authority has continued to support terrorists and incite hatred against Israelis and Jews. By pushing for unilateral measures at the UN, the Palestinian leadership has also thrown away the bilateral premise of whatever remained of the peace process. They have never faced consequences for their hostility to peace. They should face them now.

4. Defund the United Nations, in whole or in part. The UN is dependent on American taxpayers for some 22% of its general budget. International diplomats, bureaucrats and miscreants live the high live in Manhattan and elsewhere while passing resolutions and running programs directly contrary to the interests of the United States. The Trump administration and Speaker Paul Ryan will find plenty of fat to cut — and could target funding that would support Friday’s awful resolution.

5. Announce a presidential visit to Israel. Trump should visit Israel — and include the Old City, and even Hebron, to show that the new administration regards Jerusalem as Israel’s eternal, undivided capital; and that the religious rights of all people to access holy sites in the West Bank must be undisturbed under any dispensation. After Obama’s perfidy, Trump would be greeted as a hero throughout the country.

Ironically, from this dark moment in U.S.-Israel relations, a new light may shine.

Joel B. Pollak is Senior Editor-at-Large at Breitbart News. He was named one of the “most influential” people in news media in 2016. His new book, See No Evil: 19 Hard Truths the Left Can’t Handle, is available from Regnery through Amazon. Follow him on Twitter at @joelpollak.