On July 24, Hagia Sophia in Istanbul, Turkey, was converted from a museum to a mosque, giving Christians a bitter reminder that this had been the world’s grandest church for nine centuries until the 1453 conquest by Muslim forces.

Most media ignored that — two weeks beforehand — a scholarly leader of what is very likely the world’s largest organization of grass-roots Muslims posted a dramatic challenge about treatment of non-Muslims.

Excerpts from this piece by Yahya Cholil Staquf of Indonesia: “The Islamic world is in the midst of a rapidly metastasizing crisis, with no apparent sign of remission.” To “avert civilizational disaster, people of all faiths must work together to prevent the political weaponization of fundamentalist Islam.”

A summary: Believers must emulate the devout, but more culturally moderate, Muslims in what is now Indonesia who established religious freedom for all even before the young United States did so in the Constitution’s Bill of Rights.

Yet in our own era, Christianity has all but disappeared in its historic Mideast birthplace, “the latest chapter in a long and tragic history of religious persecution in the Muslim world.” In recent decades, in Africa through the Mideast and across Asia, non-Muslim minorities have, wrote Staquf, suffered “severe discrimination and violence inflicted by those who embrace a supremacist, ultra-conservative interpretation of Islam.”

This “unchecked spread of religious extremism and terror,” in turn, leads to “a rising tide of Islamophobia among non-Muslim populations.”

An “intellectually honest” examination of the situation, he added, shows that the “extremists” can rely on “specific tenets of orthodox authoritative Islam and its historic practice” from classical times, which advocate “Islamic supremacy” and encourage “enmity toward non-Muslims.” This means that, for instance, the “remarkable savagery toward Yazidis and Christians” perpetrated by ISIS in Iraq and Syria was “not a historical aberration.”

These and other newsworthy assertions come from Staquf — who is the general secretary of Indonesia’s Nahdlatul Ulama (or NU. The name means “Revival of the Ulama,” the term for the collective body of religious scholars).