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John R. Deni, PhD

International Security Scholar, Leader, Educator, and Author

Latest Publications

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Why does the United States need European allies, and why is it getting more difficult for those allies to partner with Washington in standing up to China, pushing back against Russia, and pursuing other common interests around the world? This book addresses the economic, demographic, political, and military trends that are fundamentally upending the ability and willingness of European allies to work with Washington.

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Marking the 75th anniversary of NATO’s founding, the alliance’s next summit in Washington is just months away, and allies are eagerly preparing the agenda. This time around, several member countries are keen to avoid the kind of divisive discussions over Ukraine’s path to membership that publicly played out at last year’s summit in Vilnius — and none more so than hosting nation the United States.

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With the addition of Finland and soon Sweden into the NATO fold, nearly all of the Baltic Sea littoral states will be alliance members. This has prompted some observers to label the Baltic Sea a kind of “NATO lake.” This is unfortunate framing that implies the Baltic is NATO’s alone, that the Western alliance has little to worry about from a security perspective, or that the littoral states can lean back and rest in the warm embrace of Article 5 and the United States’ commitment to their security.


Professional Bio

Dr. John R. Deni is a Research Professor of Security Studies at the U.S. Army War College's Strategic Studies Institute, a Nonresident Senior Fellow at the Atlantic Council, an Associate Fellow at the NATO Defence College, and an Adjunct Professorial Lecturer at American University's School of International Service.

He builds, leads, and manages collaborative multinational project teams, solves problems for customers and stakeholders, and advises senior civilian and military leaders.


His work has appeared in the Wall Street Journal, the L.A. Times, the Washington Post, Foreign Policy, Politico, Defense News, CNN, NPR's Weekend Edition, Newsweek, the Baltimore Sun, War on the Rocks, and a variety of peer-reviewed journals. He is the author of three books on European and American security and the editor or co-editor of six more.

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