This week we’re digging into NATO—what it is, how it’s changed, and where it’s headed. Today, Jen talks to the former U.S. ambassador to NATO, Doug Lute, about how NATO works, how it changed after the collapse of the Soviet Union, and what it would take to mobilize the alliance again. Tune in over the next two days for the rest of our NATO 101 series. Douglas Lute served as the U.S. permanent representative to the North Atlantic Council, NATO’s standing political body, from 2013 to 2017. We want to hear from you! Write to us at diplopod@ceip.org, or call us at 202-939-2247. Leave us a voicemail and we might use your question on a future episode. You can also talk to us on Twitter using #DiploPod. And follow Jen on Twitter: http://twitter.com/JRPsaki Go Deeper: More about Douglas Lute: https://www.cambridgeglobal.com/douglas-lute/ Read Carnegie expert Judy Dempsey's take on the call for an EU army: https://carnegieeurope.eu/strategiceurope/77703