Weapons seized from Iran by crew of the USS Normandy, including 358 surface-to-air missile components and “Dehlavieh” anti-tank guided missiles, February 9, 2020. (U.S. Navy/Mass Communication Specialist 2nd Class Michael H. Lehman)

The U.S. has spent five years helping Saudi Arabia commit war crimes and slaughter civilians in an aggressive war against Yemen. Washington’s subservience to the Saudi royal family, whose regime shares few interests and even fewer values with America, has made the U.S. complicit in tens of thousands of needless deaths.

The Trump administration recently demonstrated a particularly toxic mix of hypocrisy and sanctimony regarding Yemen. The Pentagon complained that naval seizures by American patrols working on behalf of the Saudis had captured blasting caps for improvised explosive devices and components of anti-tank, anti-ship, and anti-aircraft missiles. The latter, called 358s, are known as “loitering” missiles, containing two different motors and avoiding normal defensive measures. An unnamed Pentagon official complained to the New York Times that the 358s could down American helicopters and tilt-wing Ospreys—though why that matters is unclear, since Washington supposedly is not running combat missions in Yemen.

Captain Bill Urban, a spokesman for U.S. Central Command, charged: “They are illicitly smuggled for a purpose and that purpose is to spread lethal assistance to the Houthis, to Iranian proxies, there’s not a plausible explanation on how these weapons got on to a vessel in Yemen without the sanction of the Iranian government.”

With no hint of irony, he complained that Tehran had been arming the Houthis since the war’s start—when Saudi Arabia invaded Yemen—and had thereby prolonged the fighting. That is, Iran’s assistance enabled the Yemenis to defend themselves from their much richer and better armed adversary, which was supplied and otherwise aided by the U.S.

For decades, Washington has allowed Saudi Arabia to essentially hire out the American military as royal bodyguard. The Kingdom is an absolute monarchy without even a hint of religious or political liberty—indeed, Crown Prince Mohammad bin Salman, to whom the president and administration officials routinely genuflect, has reduced to nothing the minimal space that previously existed in his country for dissent. His most brazen act, in October 2018, was the murder and dismemberment of Saudi journalist and U.S. resident Jamal Khashoggi.

The United Arab Emirates is not quite so bad, at least if graded on a curve. Abu Dhabi, which has sharply downgraded its involvement in the conflict, has also long committed bombing carnage. Moreover, reports Amnesty International, the UAE imprisoned Yemenis and practiced “detention at gunpoint, torture with electric shocks, waterboarding, hanging from the ceiling, sexual humiliation, prolonged solitary confinement, squalid conditions, inadequate food and water.”

Washington has sold billions of dollars’ worth of aircraft and munitions to Riyadh and the UAE. The Pentagon also provides intelligence assistance to the Saudis in choosing their Yemeni targets, which itself raises serious questions since the royals appear to have intentionally struck civilians. For years, the U.S. military has also refueled Saudi aircraft engaged in bombing Yemen sites, including apartments, hospitals, weddings, funerals, school buses, and commercial sites.

Of course, Riyadh’s culpability and cant are greater than Washington’s. American officials are aiding and abetting murder; Saudi officials are engaging in it. Riyadh announced that it had recently intercepted missile attacks on Saudi cities. Saudi spokesman Turki al-Malki piously complained: “They were launched in a systematic, deliberate manner to target cities and civilians, which is a flagrant defiance of international humanitarian law.” Yemen’s capital, Sanaa, he said, “has become a Houthi militia assembly, installation and launching-hub for ballistic missiles that target the kingdom.”

Unsurprisingly, Malki failed to mention that he represents one of the world’s richest nations, which attacked one of the poorest. Yemen has long been convulsed by internal conflict. The latest round of fighting had nothing to do with Saudi Arabia. They invaded to restore to power a ruler they believed they could control. To the Saudi royals, everything is about the Saudi royals, irrespective of the cost to anyone else.

As for Malki’s complaint about attacks on Saudi cities, humanitarian groups agree that Riyadh has killed thousands of Yemenis. Two thirds to three quarters of all civilian casualties and property damage have resulted from Saudi and Emirati air attacks. Almost the entire Yemeni population faces death, hunger, poverty, and/or disease, the nation’s commercial, health, residential, and transportation infrastructure having been intentionally destroyed.

Last year, the United Nations warned, “The humanitarian crisis in Yemen remains the worst in the world. Nearly four years of conflict and severe economic decline are driving the country to the brink of famine and exacerbating needs in all sectors.” The UN then estimated that some 24 million people, an astounding 80 percent of the population, needed international assistance. More than 14 million were in “acute need.” The cholera epidemic afflicted a million people. All of these resulted from Riyadh’s invasion.

Another perverse result of Washington’s support for Saudi tyranny has been the unintended transfer of U.S. weapons to Islamist radicals, as well as Yemeni Houthis and Iran. The Coalition, as the Saudi-Emirati axis styled itself in 2015, has allied with Islamists, including al-Qaeda in the Arabian Peninsula, long the most feared national affiliate of Osama bin Laden’s transnational group. According to the Associated Press, the Saudis and Emiratis “cut secret deals with al-Qaeda fighters, paying some to leave key cities and towns and letting others retreat with weapons, equipment and wads of looted cash.” Militias supported by the Coalition “actively recruit al-Qaeda militants, or those who were recently members, because they’re considered exceptional fighters.”

Equally serious, the Saudis and Emiratis have armed jihadist militias, sometimes with American weapons. Amnesty International charged that “the UAE has become a major conduit for armored vehicles, mortar systems, rifles, pistols, and machine guns—which are being illicitly diverted to unaccountable militias accused of war crimes and other serious violations.” The Pentagon recently complained about Iran transferring missiles to the Houthis, yet Riyadh provided antitank missiles to local al-Qaeda forces. Explained CNN, Riyadh and Abu Dhabi “have used the U.S.-manufactured weapons as a form of currency to buy the loyalties of militias or tribes, bolster chosen armed actors, and influence the complex political landscape.” Even more bizarre, some American weapons have ended up in Yemeni and even Iranian arsenals.

Under a worst case scenario, Iran would now be able to use American weapons against the U.S. Moreover, Iranians can study those weapons, analyzing weaknesses and reverse engineering to make their own. The results can then be shared with Iranian proxies.

Thankfully, war between Washington and Tehran is not likely. However, in the name of promoting negotiation, Washington has pushed Iran toward confrontation and conflict. The administration’s failed “maximum pressure” campaign greatly increased tensions, while the assassination of Qasem Soleimani set off violent reprisals. Iraq has become a new battleground and Tehran has dramatically demonstrated its ability to harm Americans with its missile strikes. It would be a tragic irony if U.S. officials supporting the Saudis ended up helping jihadists or Iranians kill Americans.

Area specialists emphasize that the Houthis have never been tools of Tehran. Never friends of America either, they turned to Iran for aid because they had no choice. After all, their well-funded enemies enjoyed the patronage of the United States, the world’s most powerful nation. The Obama administration apparently backed the Saudi royals’ aggression as a pay-off, since the latter were upset with the nuclear deal with Iran. Washington hoped to buy the Saudis’ favor by underwriting their brutal war. President Trump tore up the Iran deal but continued the deadly aid, choosing the worst possible policy on both counts.

The Persian Gulf matters much less to America these days: Israel is a regional superpower and the oil markets have diversified. The U.S. has no intrinsic security interest in Yemen. AQAP is a concern, but it is the Saudis and Emiratis who have allied with Islamist radicals. The conflict is a humanitarian tragedy, but on that score Washington is fighting on the wrong side, on behalf of the brutal aggressor.

The administration should end America’s participation in such an unjust, unnecessary war. That would encourage Riyadh to accelerate discussions with the Houthis in search of a diplomatic settlement. But America’s policy also shouldn’t depend on the Saudi position. The shock is not that Iran aided the Yemenis; it’s that Washington is supporting the corrupt, repressive Saudi royals.

Doug Bandow is a senior fellow at the Cato Institute. A former special assistant to President Ronald Reagan, he is author of Foreign Follies: America’s New Global Empire. He currently is scholar-in-residence at the Centre for Independent Studies in Sydney.