If the 2011 intervention in Libya revived the responsibility to protect (R2P), the lack of intervention in Syria has seemed to bury it. But the doctrine was never meant as a panacea and could still work in future contexts, especially if decoupled from regime change.
Despite the fall of the Qaddafi regime in Libya, humanitarian intervention still has plenty of critics. But their targets are usually the early, ugly missions of the 1990s. Since then -- as Libya has shown -- the international community has learned its lessons and grown much more adept at using military force to save lives.
This book argues that war in general is on the decline.