Ashley J. Tellis is the Tata Chair for Strategic Affairs and a senior fellow at the Carnegie Endowment for International Peace, specializing in international security and U.S. foreign and defense policy with a special focus on Asia and the Indian subcontinent.

While on assignment to the U.S. Department of State as senior adviser to the undersecretary of state for political affairs, he was intimately involved in negotiating the civil nuclear agreement with India.

Previously he was commissioned into the U.S. Foreign Service and served as senior adviser to the ambassador at the U.S. Embassy in New Delhi. He also served on the National Security Council staff as special assistant to President George W. Bush and senior director for strategic planning and Southwest Asia. Prior to his government service, Tellis was senior policy analyst at the RAND Corporation and professor of policy analysis at the RAND Graduate School.

He is a counselor at the National Bureau of Asian Research, the research director of its Strategic Asia program, and co-editor of the program’s eighteen most recent annual volumes, including this year’s Strategic Asia: Reshaping Economic Interdependence in the Indo-Pacific.

He is the author of Striking Asymmetries: Nuclear Transitions in Southern Asia (2022) and India’s Emerging Nuclear Posture (2001), the co-author of Interpreting China’s Grand Strategy: Past, Present, and Future (2000), and the co-editor of Getting India Back on Track (2014) and Grasping Greatness: Making India a Leading Power (2022). Other significant publications include Revising U.S. Grand Strategy Toward China (2015, co-author), Balancing Without Containment: An American Strategy for Managing China (2014), Atoms for War? U.S.-Indian Civilian Nuclear Cooperation and India's Nuclear Arsenal (2006), India as a New Global Power: An Action Agenda for the United States (2005), Measuring National Power in the Post-Industrial Age (2000, co-author), and Stability in South Asia (1997). In addition to many more Carnegie and RAND reports, his academic publications have appeared in several edited volumes and peer-reviewed journals.

Tellis is a member of several professional organizations related to defense and international studies including the Council on Foreign Relations, the International Institute of Strategic Studies, the United States Naval Institute, and the Navy League of the United States.

He earned his PhD in political science from the University of Chicago. He also holds an MA in political science from the University of Chicago and both BA and MA degrees in economics from the University of Bombay.