Armies have seized power in five states of the greater Sahel over nine months, cementing this African region as the most pronounced center of a global crisis. The Sahel’s military coups d’état are an acute symptom of poor and authoritarian governance that is breeding extremism and transnational criminality, igniting violence and undermining efforts to build democracies. These crises highlight widening security risks for the Sahel’s 135 million people and ultimately for Europe and the United States. Congress has begun urgently needed policy changes that analysts say should now be accelerated to prevent further coups and to buttress stability and democracy.