From first reactions, it appears that Hill Republicans will be near unanimous in voting a resolution of rejection of the Iran nuclear deal. They will then vote to override President Obama’s veto of their resolution. And if the GOP fails there, Gov. Scott Walker says his first act as president would be to kill the deal.

But before the party commits to abrogating the Iran deal in 2017, the GOP should consider whether it would be committing suicide in 2016.

For even if Congress votes to deny Obama authority to lift U.S. sanctions on Iran, the U.S. will vote to lift sanctions in the UN Security Council. And Britain, France, Germany, Russia, and China, all parties to the deal, will also lift sanctions.

A Congressional vote to kill the Iran deal would thus leave the U.S. isolated, its government humiliated, unable to comply with the pledges its own secretary of state negotiated. Would Americans cheer the GOP for leaving the United States with egg all over its face?

And if Congress refuses to honor the agreement, but Iran complies with all its terms, who among our friends and allies would stand with an obdurate America then? Israel would applaud, the Saudis perhaps, but who else? And as foreign companies raced to Iran, and U.S. companies were told to stay out, what would GOP presidential candidates tell the business community?

Would the party campaign in 2016 on a pledge to get tough and impose new sanctions? “Coercive diplomacy,” the Wall Street Journal calls it. If so, what more would they demand that Iran do? And what would they threaten Iran with, if she replied: We signed a deal. We will honor it. But we will make no new concessions under U.S. threat.

Would we bomb Iran? Would we go to war? Not only would Americans divide on any such action, the world would unite—against us. And would a Republican president really bomb an Iran that was scrupulously honoring the terms of the John Kerry deal? What would we bomb? All the known Iran nuclear facilities will be crawling with U.N. inspectors.

“Either the issue of Iran obtaining a nuclear weapons is resolved diplomatically through negotiation or it’s resolved through force,” said the president, “Those are the options.” Is that not pretty much where we are at, even if the GOP does not like it?

Republicans seem to be unable to grasp the changes that have taken place in this century. With the Arab Spring, the fall of half a dozen regimes, the rise of al-Qaeda and ISIS, civil wars in Libya, Syria, Yemen, and Iraq, we have a new Middle East. Our principal enemies are now al-Qaeda and ISIS. And while both have been aided by our old allies, Turkey, Qatar, and Saudi Arabia, both are being resisted by Iran.

But, we are reminded, Iran’s regime is founded upon ideological hatred of America. But, so, too, were Mao’s China and Stalin’s USSR. Yet Nixon forged a detente with Mao and FDR partnered with Stalin. And Ronald Reagan negotiated a strategic arms deal with the “evil empire” of his time.

Bibi Netanyahu and AIPAC, the Saudis and Gulf Arabs, will demand that Congress kill the Iran deal that Lindsey Graham says is a “death sentence for the State of Israel.” But one trusts that, this time, the GOP will add a dose of salt to what the hysterics are bellowing.

After all, it was Bibi’s rants—Iran is hellbent on getting a bomb, is only months away, and military action is needed now to smash the whirling centrifuges—that teed up the talks for Tehran. All Iran had to do was prove it had no bomb program, which was not difficult, as U.S. intelligence had repeatedly said Iran had no bomb program.

Then the Iranians proved it. They agreed to cut their centrifuges by two-thirds, to eliminate 98 percent of their uranium, to halt production of 20 percent uranium at Fordow, to convert the heavy-water reactor at Arak that produces plutonium to a light water reactor that produces one kilogram a year, and to let cameras in and give U.N. inspectors the run of their nuclear facilities.

And how is Israel, with hundreds of atom bombs, mortally imperiled by a deal that leaves Iran with not a single ounce of bomb-grade uranium?

What does Iran get? What Iran always wanted. Not a bomb which would make Iran a pariah like North Korea and could bring down upon her the same firestorm America delivered to Iraq, but a path to become again the hegemon of the Persian Gulf.

Remarkable. Iran agrees not to build a bomb it had already decided not to build, and we agree to lift all sanctions. And they pulled it off. What is one or two atom bombs you can’t use, without committing national suicide, compared to $100 billion in freed assets and a welcome mat back to the community of nations.

Patrick J. Buchanan is the author of The Greatest Comeback: How Richard Nixon Rose From Defeat to Create the New Majority. Copyright 2015