Grieco’s work focuses on U.S. foreign policy and defense policy, addressing questions about international security, military force structure military alliances, drone warfare, air operations, and the future of war. She has expertise in U.S. military alliances and the security architectures of the Indo-Pacific and Europe, as well as current and emerging airpower strategies and capabilities. She is also an adjunct professor in the Center for Security Studies at Georgetown University and a non-resident fellow at the Brute Krulak Center of the Marine Corps University.