Kalev spoke at the Council on Foreign Relations (CFR) today as part of its Voices of the Next Generation series.  His interviewer was Vivian Schiller, who until recently was head of news and journalism partnerships at Twitter. Past speakers have included Gavin Andresen, chief scientist of the Bitcoin Foundation, Vanessa Kerry, cofounder and CEO of Seed Global Health, and Chris Hughes, publisher and editor-in-chief of New Republic.