By Fareed Zakaria

This week’s bombing in Manchester, England, was another gruesome reminder that the threat from radical Islamist terrorism is ongoing. And President Trump’s journey to the Middle East illustrated yet again how the country central to the spread of this terrorism, Saudi Arabia, has managed to evade and deflect any responsibility for it. In fact, Trump has given Saudi Arabia a free pass and a free hand in the region.

The facts are well-known. For five decades, Saudi Arabia has spread its narrow, puritanical and intolerant version of Islam — originally practiced almost nowhere else — across the Muslim world. Osama bin Laden was Saudi, as were 15 of the 19 9/11 terrorists.

And we know, via a leaked email from former secretary of state Hillary Clinton, in recent years the Saudi government, along with Qatar, has been “providing clandestine financial and logistic support to [the Islamic State] and other radical Sunni groups in the region.” Saudi nationals make up the second-largest group of foreign fighters in the Islamic State and, by some accounts, the largest in the terrorist group’s Iraqi operations. The kingdom is in a tacit alliance with al-Qaeda in Yemen.

The Islamic State draws its beliefs from Saudi Arabia’s Wahhabi version of Islam. As the former imam of the kingdom’s Grand Mosque said last year, the Islamic State “exploited our own principles, that can be found in our books. . . . We follow the same thought but apply it in a refined way.” Until the Islamic State could write its own textbooks for its schools, it adopted the Saudi curriculum as its own.

Saudi money is now transforming European Islam. Leaked German intelligence reports show that charities “closely connected with government offices” of Saudi Arabia, Qatar and Kuwait are funding mosques, schools and imams to disseminate a fundamentalist, intolerant version of Islam throughout Germany.

In Kosovo, the New York Times’ Carlotta Gall describes the process by which a 500-year-old tradition of moderate Islam is being destroyed. “From their bases, the Saudi-trained imams propagated Wahhabism’s tenets: the supremacy of Shariah law as well as ideas of violent jihad and takfirism, which authorizes the killing of Muslims considered heretics for not following its interpretation of Islam. . . . Charitable assistance often had conditions attached. Families were given monthly stipends on the condition that they attended sermons in the mosque and that women and girls wore the veil.”

In Kosovo, the New York Times’ Carlotta Gall describes the process by which a 500-year-old tradition of moderate Islam is being destroyed. “From their bases, the Saudi-trained imams propagated Wahhabism’s tenets: the supremacy of Shariah law as well as ideas of violent jihad and takfirism, which authorizes the killing of Muslims considered heretics for not following its interpretation of Islam. . . . Charitable assistance often had conditions attached. Families were given monthly stipends on the condition that they attended sermons in the mosque and that women and girls wore the veil.”

The United States has now signed up for Saudi Arabia’s foreign policy — a relentless series of battles against Shiites and their allies throughout the Middle East. That will enmesh Washington in a never-ending sectarian struggle, fuel regional instability and complicate its ties with countries such as Iraq that want good relations with both sides. But most important, it will do nothing to address the direct and ongoing threat to Americans — jihadist terrorism. I thought that Trump’s foreign policy was going to put America first, not Saudi Arabia.