Europeans are concerned that the US will withdraw support from NATO. They are right to worry − Americans should, too
- Written by John Deni, Research Professor of Joint, Interagency, Intergovernmental, and Multinational Security Studies, US Army War College

The United States has long played a leadership role in NATO, the most successful military alliance in history.
The U.S. and 11 other countries in North America and Europe founded NATO in 1949,...