According to U.S. military planners, climate change now poses the #1 national security threat to the U.S., ranking higher than terrorism. Last year alone, 19.2 million people were displaced as a result of climate change.Population movement due to climate change is an emerging issue and this book is in a unique position to address this as a national security issue. Immigration and borders continues to be a major issue in the national and international news cycle and Todd Miller's print history ranging from his feature in the New York Times Magazine to Border Patrol Nation position him to address this. As people are displaced from the coast, they being to "challenge" borders. The response unfortunately has been militarization. Immigration, border fortification, and climate change legislation will continue to be subject to ongoing debates, giving Miller many opportunities for op-eds on the top political blog TomDispatch, where he's a regular contributor, as well as The Nation, Huffington Post, Mother Jones, Common Dreams and Guernica, where he regularly writes, too.