What has emerged in the second decade after 9/11 is a remarkable consensus among Democrats and Republicans on a core approach to the nation’s foreign policy. It’s certainly not a perfect alignment. But rarely since the end of the Cold War has there been this level of consensus. Indeed, while Americans may be divided, polarized and dysfunctional about issues closer to home, we are really quite united in how we see the world and what we should do about it. […] Paradoxically, both George W. Bush’s successes and failures helped to create this new consensus. His tough and largely successful approach to counterterrorism — specifically, keeping the homeland safe and keeping al Qaeda and its affiliates at bay through use of special forces, drone attacks, aggressive use of intelligence, and more effective cooperation among agencies now forms a virtually unassailable bipartisan consensus.