“In March 2020, the secretary-general of the North Atlantic Treaty Organization (NATO), Jens Stoltenberg, convened a “reflection group” to examine how the trans-Atlantic alliance can adapt to the new security challenges of the 2020s and beyond. As we await the final report and recommendation of this group of experts, Orbis Editor Nikolas Gvosdev asked Elbridge A. Colby and Ian Brzezinski to offer their own reflections and to discuss their perspectives on the future of the alliance and the next steps that NATO should be taking in this new era of systemic rivalry, particularly with the world’s authoritarian great powers…”