Secretary General of NATO and former Prime Minister of Norway Jens Stoltenberg (@jensstoltenberg) speaks with Aroop Mukharji (@aroopmukharji) about NATO, the Arctic, Russia, and what he looks forward to when he visits America.

Kelly Greenhill, an Associate Professor at Tufts University and a Research Fellow with the Belfer Center’s International Security Project, talks with Aroop Mukharji (@aroopmukharji) about refugees, building walls, R2P, and weapons of mass migration.

Zachary Kaufman (@zacharykaufman), an academic specializing in political science, public policy, and law, talks with Aroop Mukharji (@aroopmukharji) about transitional justice, genocide, and the time democracy failed him.

Steven Pinker (@sapinker), Cognitive Scientist and Professor of Psychology at Harvard University, talks with Aroop Mukharji (@aroopmukharji) about language, violence and video games, the future of war, and the possibility of a Trump presidency.

Sir Peter Westmacott (@PeterWestmacott), former British Ambassador to the United States and Belfer Center Senior Fellow, talks with Aroop Mukharji (@aroopmukharji) about life as an Ambassador, the British embassy in Washington, D.C., and U.S.-U.K. relations.

Michael Sulmeyer (@sultanofcyber), Director of the Cyber Security Project at the Belfer Center and former Director for Plans and Operations for Cyber Policy in the Office of the Secretary of Defense, talks with Aroop Mukharji (@aroopmukharji) about protecting yourself online, running for office in the age of social media, and cyber security’s “sex appeal.”

Farah Pandith (@Farah_Pandith), Senior Fellow at the Belfer Center’s Future of Diplomacy Project and formerly the first ever Special Representative to Muslim communities at the U.S. State Department, sits down with Aroop Mukharji (@aroopmukharji) to talk about how to curb the spread of violent extremism, particularly among Muslim youth.

Matthew Bunn, Professor of Practice at Harvard Kennedy School and Co-Principal Investigator at the Belfer Center’s Project on Managing the Atom, sits down with Aroop Mukharji (@aroopmukharji) to talk about everything nuclear—from the nuclear football to the best way to prevent nuclear smuggling.

Richard Zeckhauser, Frank P. Ramsey Professor of Political Economy, at Harvard Kennedy School, sits down with Aroop Mukharji (@aroopmukharji) to talk about everything from how to test your optimism to eating salmon to paltering, and saving the Air Force money.

Niall Ferguson, Laurence A. Tisch Professor of History, Harvard University, and author of “Kissinger: 1923-1968: The Idealist,” sits down with Aroop Mukharji to talk about everything from Kissinger, the “secret swinger,” to why ISIS is like the Bolsheviks.