As this year’s NATO Summit approaches, key questions about the Russia-Ukraine war remain unresolved. Ceasefire talks have stalled, and the United States continues to struggle with how to compel ...

Erin D. Dumbacher is Stanton nuclear security senior fellow at the Council on Foreign Relations (CFR). Dumbacher is an international security and technology policy researcher and advisor with ...

Inaugurated in 1969, the Russell C. Leffingwell Lecture was named for Russell C. Leffingwell, a charter member of the Council who served as its president from 1944 to 1946 and as its chairman from ...