International Security & Defense

Europe after the Russo-Ukrainian War must develop a new security structure to defend against any Russian aggression. The safest option is a non-offensive, confidence-building defense. This option includes proposals such as the “spider in the web” strategy and the “porcupine” strategy to provide for European security in a region threatened by Russian expansion—without relying on the threat of nuclear war. 

This piece is a series in the Defense, Emerging Technology, and Strategy (DETS) Program’s analysis on the war in Ukraine, including a corresponding policy brief on Ukraine’s Battlefield Technologies and Lessons for the U.S. published in July 2023. 

On October 30, 2023, President Biden issued the Executive Order on the Safe, Secure, and Trustworthy Development and Use of Artificial Intelligence, aimed at realizing the benefits of AI, while mitigating critical risks. This article provides an overview of its key national security initiatives and explores issues relevant to implementation.

For Ukraine to maintain its defense and decisively thwart Russia’s invasion, it will take steadfast commitments from Western allies providing both state-of-the-art equipment and basic warfighting needs, local industry leaders and factory workers readying equipment for the frontlines and developing innovative technologies, and civilian volunteers tirelessly filling in the remaining gaps.

Peaking great powers facing a slowdown in growth are likely to try to violently shake up the world. These findings amend classic theories of great power conflict. They help explain some of the most consequential geopolitical events in modern history. And they have ominous implications for contemporary Chinese foreign policy. 

To date, most of the climate policy attention has been focused on the need to reduce the greenhouse gases that are causing climate change and, as a corollary, to accelerate the U.S. economy’s transition from fossil fuels to clean energy. Yet climate change also is straining our nation’s emergency response capabilities as traditional climate-infused disasters such as hurricanes and floods become more frequent and destructive. At the same time, the emergency response community faces new challenges as slower-to-develop climate impacts like drought, heat, and wildfire increasingly are hitting an acute tipping points and becoming life- and livelihood-threatening disasters.

Juliette Kayyem explains the significance of Oath Keepers leader Stewart Rhodes turning against other extremists in his trial.

As inventions go, the Internet stacks up with the best of them: the lightbulb, the automobile, even fire. In its first thirty years, the Internet’s worldwide adoption and breadth of application has exceeded any other technological advance in history. It expands our reach by bringing people, experiences, and things to us with the click of a mouse. It connects us to an increasing number of gadgets, from smartphones to voice kiosks and soon self-driving vehicles that will no doubt converse with us while we commute, happily oblivious to the traffic around us. We revel in our newfound agility and versatility. Importantly, our precious network kept us sane during a worldwide pandemic and enabled the world to work remotely while most of its population was frozen at home. For resilience against catastrophes alone, the Internet has become indispensable.

Around the world, the United States relies heavily on security assistance to gain influence and make its allies more formidable. When actual war breaks out, however, many long-time recipients of such assistance fight poorly or otherwise do not seem to have heeded the lessons that U.S. trainers tried to impart. The Naval War College’s Rachel Tecott Metz examines this track record, arguing that the United States relies too much on teaching and persuasion and should instead emphasize conditionality more. 

Juliette Kayyem writes that the government may classify too much intelligence, but that doesn't mean a low-level employee should be able to see it.