International Security & Defense

Juliette Kayyem argues why making extremist leaders answer for their actions will deter future violence.

Stephen M. Walt describes a "gnawing fear that we are living through a series of disruptions that are overwhelming our collective ability to respond." What does this mean for public confidence in the entire political system, and is there any cause for optimism?

Ivan Arreguin-Toft argues that non-material considerations like cyber power matter just as much as material ones in debates about U.S. retrenchment from the Middle East.

Do armed drone programs decrease or increase terrorism? Existing studies on this question produce conflicting arguments and evidence. Drone optimists contend that armed drones reduce a country's vulnerability to terrorism, while pessimists claim that this military technology provokes higher levels of terrorism. Prior research focuses almost exclusively on one particular context: the short-term effect of the US drone program in Pakistan. However, armed drones have proliferated rapidly over the last decade and eighteen countries now possess this technology. The authors expand the scope of prior studies by leveraging new data to assess how obtaining armed drones and conducting drone strikes changed the degree to which all drone possessors experienced terrorism between 2001 and 2019.

Joshua A. Schwartz and Matthew Fuhrmann ask: Do armed drone operations reduce terrorism, or do they actually make countries more vulnerable to it?

A new theory of war duration suggests that strategic narratives explain why the U.S. war in Afghanistan endured and ended. A robust anti-terrorism narrative generated audience costs for presidential inaction. As the narrative weakened, these costs declined, and the war ended.

Juliette Kayyem analyzes the January 6 Committee hearings.

In the past, strategic surprise has often stemmed from a failure of imagination. Most intelligence failures are rooted in a lack of foresight or early warning of impending events. Blue sky thinking seeks to prevent these surprises by devoting more attention not just to known risks and likely scenarios, but also to low probability, high impact events. In an unprecedented step in forging ongoing global collaboration, 129 global experts gathered in Amman, Jordan, in December 2021. The conference was held under the auspices of Jordan’s Aqaba Process and facilitated by representatives from the Harvard Kennedy School Belfer Center’s Intelligence Project. Attendees included intelligence officers, diplomats, military officers, private sector practitioners, and academics representing 29 countries, 5 continents, and 68 government and private sector organizations. Through presentations and discussion under Chatham House Rules, the conference facilitated an open exchange of ideas on the possible next big threats from terrorism and on strategies for moving forward.

Juliette Kayyem argues that language alone cannot change the violent extremism that is a part of American society today, which President Joe Biden called out last night as "hate-fueled domestic terrorism" that leads to such tragedy. Social-media platforms should be held accountable and gun laws should be more restrictive, but the wrong language has a tendency to excuse the herd. 

Juliette Kayyem writes that in the United States, for a Jewish congregation to become a fortress would seem too militaristic, too aggressive. To make a soft target harder would more likely change the target than deter the attacker.