[The Atlantic] Jonathan Tepperman, the managing editor of Foreign Affairs, makes a striking claim at a time when terrorism seems to be spreading: While small-scale attacks occasionally occur in the country, “The big truth is that Indonesia has come close to effectively eliminating the threat of extremist violence” from Islamic terrorist groups.Tepperman lists five factors behind Indonesia's success. The five factors offer insight into some of the root causes of terrorism and Islamic extremism, but they also reveal the limits of Indonesia as a model — both on its own merits and for other countries.