Halla Logadóttir, former director of the Iceland School of Energy at Reykjavík University and co-founder of the Belfer Center’s Arctic Initiative, speaks with Aroop Mukharji (@aroopmukharji) about the future of the Arctic region, sustainability in Iceland, and how Icelanders get their names.

Radosław Sikorski (@sikorskiradek), former Foreign Minister and Defense Minister of Poland and a Fisher Family Fellow with the Future of Diplomacy Project, talks with Aroop Mukharji (@aroopmukharji) about the rise of right-wing nationalism, Russia, and gastrodiplomacy.

Margaret Macmillan, Professor of History at the University of Toronto and affiliate with the Belfer Center’s Applied History Project, talks with Aroop Mukharji (@aroopmukharji) about how to identify good history, dead white man theory, and Canadian vs. U.S. donuts.

Kendall Hoyt, Assistant Professor of Medicine at the Dartmouth Medical School and former fellow with the Belfer Center’s International Security Program, talks with Aroop Mukharji (@aroopmukharji) about improving response time to outbreaks, a brief history of anti-vaxxers, and how she got into biodefense.

Chuck Freilich, former Israeli Deputy National Security Adviser, Belfer Center Senior Fellow, and Author of “Israeli National Security: A New Strategy for an Era of Change,” talks with Aroop Mukharji (@aroopmukharji) about Israel’s goals for the future, its relationship with the U.S., and his personal experience making aliyah as a teenager.

Elizabeth Sherwood-Randall (@LSRTweets), former Deputy Secretary of Energy and Belfer Center Senior Fellow, talks with Aroop Mukharji (@aroopmukharji) about the mystery surrounding the Energy Department’s National Laboratories, the smart grid, the U.S. nuclear arsenal, energy sources of the future, and her favorite energy bar.

Ash Carter, the 25th Secretary of Defense and the Director of the Belfer Center, talks with Aroop Mukharji (@aroopmukharji) about how he connected the technology industry with the Defense Department through DIUx, the tensions between the President and his cabinet, and what lessons we can learn from medieval history.

Vera Mironova (@vera_mironov), an Associate with the Belfer Center’s International Security Program, talks with Aroop Mukharji (@aroopmukharji) about ISIS’s drug and alcohol problem, her experience embedded in combat zones, and how insurgents shop around for the best job opportunities.

Jake Sulllivan, former Director of the Policy Planning Office at the U.S. State Department and former National Security Adviser to Vice President Joe Biden, talks with Aroop Mukharji (@aroopmukharji) about the secret negotiations behind the Iran nuclear deal, long-term policy planning at the State Department, and how to stay sharp on a demanding travel schedule.

Avril Haines, former CIA Deputy Director and former Deputy National Security Adviser to President Obama, chats with Aroop Mukharji (@aroopmukharji) about being a woman at the CIA, why we don’t know much about North Korea, what it’s like inside the White House situation room, and how she went from indie bookstore owner to No. 2 at the CIA.