Houghton Mifflin Harcourt will publish a book by Fiona Hill, the former deputy assistant to President Trump who testified at his impeachment trial, the publisher said in a news release.

The book, titled There Is Nothing for You Here: Opportunity in an Age of Decline, will be published in the fall of 2021.

“Dr. Hill will describe the origins and growth of deep, geographically concentrated opportunity gaps, and show how they have fueled the rise of populism at home and abroad,” HMH said. “And she will share insights from her work in Russia, Europe, and the United States to show how realizing America’s inherent promise—and stabilizing its democracy—depends on restoring hope and opportunity to all its citizens, not merely a privileged few.”

Hill made headlines last year when she testified in Trump’s impeachment trial, telling legislators that Russia had sought to undermine the U.S. by taking advantage of political divisions.

Her book, HMH said, will address “how our current, polarized moment is the result of long historical trends—from imperial overreach to post-industrial decline—that have long afflicted Russia and the United Kingdom, and which now are beginning to affect the United States.”

“I am writing this book to share my story, but also to share the lessons I’ve learned about how we can revitalize our country’s forgotten places,” Hill said in a statement.

Michael Schaub is a Texas-based journalist and regular contributor to NPR.