President Donald Trump’s reaction to the disappearance and death of Saudi journalist Jamal Khashoggi in Istanbul reveals important details about the declining influence of U.S. in the Middle East.

As a scholar who follows the links between international and domestic politics in the Middle East, it is not hard to see that what President Trump has said so far about the Khashoggi affair will accelerate the diminishing power of the U.S. in the Middle East.

New dynamic for an old alliance

American influence in the Middle East – especially over Saudi Arabia – was already waning before Trump’s election.

After the Bush administration’s failure to turn post-invasion Iraq into a model of pro-American democracy in the Middle East, the Obama administration attempted to avoid Middle East military quagmires.

Instead, it tried to use diplomacy to negotiate with Iran on its nuclear program. But asking the Saudis to share their neighborhood with their Iranian rivals was instead seen by Saudis as asking for Arab acquiescence to Iranian power.

The recent rise of Saudi Crown Prince Mohammad bin Salman pushed Saudi Arabia from a country that preferred to work in the background in international affairs into a nation that stepped up its activity as the U.S. stepped back.

The Saudis took Trump’s election as an opportunity to push the U.S. for a harder line on Iran. They wanted the U.S. to reverse the nuclear deal and do more to block Iran’s clients in Syria, Yemen, Iraq and Bahrain. The Saudis also wanted to arm themselves with more modern weapons systems.

Trump and the art of the arms deal

Trump’s vision of Saudi-U.S. relations has arms sales by the U.S. to Saudi Arabia at its center, which is an example of how his “America First” foreign policy works.

In Trump’s first foreign visit as president, he flew to Saudi Arabia and signed a deal to sell US$110 billion worth of arms to the Saudis. Trump emerged from that trip with a close relationship to Crown Prince Salman, who drives much of Saudi government policy for his aged father, King Salman.

Since then, the prince has developed a strong relationship with Trump’s son-in-law, Jared Kushner, who serves as a regular liaison between the U.S. and Saudi Arabia.

Recently, Trump rejected the idea of Congress imposing sanctions on Saudi Arabia if the Saudis were found responsible for killing Khashoggi.

Trump said, “I don’t like stopping massive amounts of money that’s being poured into our country on – I know they’re talking about different kinds of sanctions, but they’re spending $110 billion on military equipment and on things that create jobs, like jobs and others, for this country.”

In another interview, Trump said that he told the King of Saudi Arabia “King, you’ve gotta pay” for American protection.

Arms or influence?

Trump’s transactional foreign policy is primarily concerned with money and American jobs. Previous bipartisan cornerstones of U.S. foreign policy have fallen to the wayside, including promoting human rights and democracy or seeking a strategic balance of power favorable to American interests.

This policy risks pushing U.S. influence in the Middle East further to the margins. In Trump’s calculations, the U.S. cannot sanction or chastise Riyadh because it would hurt the U.S. more than it would Saudi Arabia. American jobs would be lost if the Saudis turned to purchasing arms from Russia or China.

While Trump may believe his own accounting of the $110 billion in arms sales, there are questions as to whether the sales are really worth far less. Moreover, some observers have remarked that the U.S. arms sales were trading human rights for profit. In addition to concerns about the lack of freedom within Saudi Arabia, others have worried that these arms will aid what has become a shockingly deadly Saudi intervention in Yemen.

The Saudis have threatened “that if it receives any action, it will respond with greater action, and that the Kingdom’s economy has an influential and vital role in the global economy.” The exact nature of these actions remains unclear. These threats, however, play on fears that the Saudis would cancel the arms purchase or raise the price of oil. And late on Monday, reports emerged that Saudi Arabia was going to admit accidentally killing Khashoggi in an interrogation.

President Trump has emboldened Saudi Arabia by relying on his personal diplomacy and focusing on jobs rather than broader American interests or ideals. If the Saudis are able to keep the United States out of the Khashoggi affair, then Trump has opened the door to further limits on U.S. influence in the Middle East.

Russell E. Lucas does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.