Over the last 15 years, the fervent embrace of drone strikes have helped the U.S. create the most far-reaching counterterrorism apparatus in history.
ISIS has abandoned its blitzkrieg-style land grab. Improvised explosive devices, suicide vests, and car bombs have once again become the order of the day.
Where governments are unable or unwilling to venture, at least publicly, for fear of losing credibility with their electorates or their allies, parallel diplomacy can offer a way forward.
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