Joshua Tallis, Ph.D.
Research Scientist


Joshua Tallis is a Research Scientist specializing in maritime security, irregular threats, and issues of naval and national security strategy. Within CNA, he conducts and directs political-military analysis for the Navy and Department of Defense in the Strategy, Policy, Plans and Programs (SP3) division. Josh also served as the CNA field representative to Carrier Strike Group EIGHT during the Navy's first instantiation of Dynamic Force Employment in the High North. He holds a doctorate in International Relations from the University of St Andrews, where his research at the Centre for the Study of Terrorism and Political Violence explored new concepts for maritime strategies in the littorals. Those themes are explored further in his 2019 book, The War for Muddy Waters: Terrorists, Traffickers, Pirates, and Maritime Insecurity. Before joining CNA, Josh was manager for research and analysis at a boutique security and intelligence services firm in Northern Virginia.


August 30, 2019

Joshua Tallis says, "If we don't think strategically about how you manage and address challenges at the low-end we run the significant risk of failing to respond appropriately when issues arise."

CIMSEC: "Forum for Authors and Readers" [33:33]

June 26, 2019

Joshua Tallis says, "We can talk about countering piracy, we can talk about countering terrorism, we can talk about countering narcotics and human trafficking, but how do we talk about the coherence of maritime insecurity?"

Hudson Institute: "Maritime Irregular Warfare: Preparing to Meet Hybrid Maritime Threats"

June 17, 2019

Joshua Tallis writes, "These forecasts are unequivocally telling us that dense, networked, and littoral communities are an emerging global force."

CIMSEC: "The Case for Maritime Security in an Era of Great Power Competition"

April 22, 2019

Joshua Tallis writes, "Partnership is not zero-sum, and pursuing a local agenda helps ensure long-term buy-in from authorities and the people they will rely on to help keep communities safe."

The Strategy Bridge: "Hybrid Threats and the Constabularization of Strategy"

November 30, 2018

Joshua Tallis writes, “Urban centers have a complicated relationship with the maritime space. On the one hand, cities are major contributors to insecurity along their maritime borders, exacerbating issues from human trafficking to illegal fishing. On the other hand, cities are increasingly at the center of international consensusbuilding and problem-solving forums that are producing results even as nations fail to come to agreement on similar challenges.”

Marine Corps University Journal Fall 2018: “Cities and the Sea”

December 13, 2017

Joshua Tallis writes, "So, does terrorism work? Those looking for a straight yes or no will finish this book disappointed. Yet English succeeds in his ultimate goal of elucidating and demonstrating a more robust framework through which this debate can continue fruitfully."

Marine Corps University Journal (page 115): "Does Terrorism Work? A History. (Book Review)"