Catrina Doxsee

Russia's February 2022 invasion of Ukraine triggered the bloodiest war in Europe since World War II and raised significant questions about the United States' role in Europe. This CSIS report examines the U.S. force posture in Europe---including the military capabilities, personnel, infrastructure, and agreements that support defense operations and plans---and makes recommendations for future U.S. posture. It finds that the United States needs a robust, long-term military force posture in Europe, focused on the North Atlantic Treaty Organization's (NATO) eastern flank, to deter future Russian aggression.

This CSIS report states that terrorism is no longer the leading international threat to the United States or its top defense priority, but challenges related to violent extremism remain. The threat from Salafi-jihadist groups such as al Qaeda and the Islamic State has declined, and ethnonationalist threats are largely contained. However, a broader patchwork of violent far-left extremist ideologies has become more prominent on the global stage.

China is conducting an unprecedented campaign below the threshold of armed conflict to expand the influence of the Chinese Communist Party and weaken the United States and its partners. The scale of China’s actions in the United States is unparalleled. This CSIS report offers one of the most comprehensive analyses to date of Chinese political warfare activities and examines China’s main actions, primary goals, and options for the United States and its partners.