Adm. James Stavridis was NATO's top military commander and now serves as the dean of the Fletcher School of Law and Diplomacy at Tufts University. (Courtesy of U.S. Naval War College).

Admiral James Stavridis, dean of Tufts University's Fletcher School of Law and Diplomacy, is being vetted as a potential vice president for Hillary Clinton.

Stavridis is a retired Navy admiral who served as the Supreme Allied Commander of NATO.

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Back in 2014, he told WGBH's On Campus that as countries like China, India, and Russia are on the rise, the world has become a different place and that means new challenges.

"It's a much more complicated world," Stavridis said. "The good news is we don't have to worry about a nuclear war - an apocalyptic ending as we did in the Cold War. And we don't face an implacable totalitarian regime as we did in the form of the Soviet Union. On the other hand, it's hard. It's complicated. You have to understand so many different cultures, and histories and ideas."

During his four years with NATO, Stavridis oversaw operations in the Middle East and in the Balkans.

Listen to our 2014 interview with Stavridis: