Reverberations of the global “war on terror”—launched by the Bush Administration following the attacks of September 11, 2001—have rippled throughout the world, taking hundreds of thousands of lives and costing trillions of U.S. dollars. This week marks the twentieth anniversary of the U.S. invasion of Iraq, conducted on the false pretext that Saddam Hussein had weapons of mass destruction. The New Yorker staff writers Susan B. Glasser, Jane Mayer, and Evan Osnos all spent time writing and reporting on the Iraq War and its aftermath—including from within Iraq. In our weekly roundtable, they look at the profound consequences of the war and how it has impacted today’s politics—through, for example, the rise of Donald Trump, debates over America’s role in the war in Ukraine, and widespread distrust of experts and the mainstream media. We are living in a world the Iraq War created, and Glasser, Mayer, and Osnos explain how.