Drawing upon dozens of interviews, government records, and historical research, The Call lays out what we really talk about when we talk about Saudi money

The Call chronicles the House of Saud's vast project to transform the Muslim world by spreading Wahhabism, its brand of ultraconservative Islam. Using billions of dollars, thousands of personnel, and institutions both governmental and unofficial, the Saudi proselytization network is both more complex and more influential than is commonly believed.

Journalist Krithika Varagur travels to three continents to tell the story of the Saudi religious campaign from Indonesia, Nigeria, and Kosovo. She finds Saudi money in all kinds of places, from universities to political parties to extremist and jihadist groups. She meets people who were swept up in the campaign's Cold-War-era peak and those who are still holding up its tarnished international brand today, as well as the victims of the intolerance and fundamentalism that were spread through the Saudi dawa, or "call," to Islam. The Call lays out the consequences, intended and unintended, of a Saudi initiative that has taken on a life of its own, and illuminates the global sweep of the Kingdom's ambitions over the last century.