Double jeopardy. It’s been five years since Edward Snowden leaked a horde of top-secret intelligence documents exposing NSA surveillance programs. This probing, analytical retrospective, “Edward Snowden Reconsidered,” published by The New York Review of Books, explores the fissures in American and international politics wedged open by Snowden’s actions, as well as the cast of ideological, intrigue-enmeshed characters who brought us here.