International Security & Defense

Dozens of in-depth interviews in Lebanon after its civil war show how wartime displacement transformed localities in ways that transcend religious identity. With more than 80,000 people displaced from southern Lebanon because of fighting since October 7, 2023, the Israel-Gaza war is likely to strengthen Hezbollah’s grip when the displaced populations return and in localities in south Lebanon where displaced populations settle. 

Christopher Darnton responds to Rachel Metz's Winter 2022/23 article, "The Cult of the Persuasive: Why U.S. Security Assistance Fails."

Climate disasters shape the trajectory of internal conflicts in states highly vulnerable to changes in conflict dynamics. Conflict after a climate disaster escalates when the disaster induces shifts in relative power that enable one side to increase its military efforts. But when one actor is weakened by the disaster and the other lacks the capability to exploit that weakness, conflict intensity declines.

State support to non-state armed groups outside a state’s own territory is commonly seen as a direct relationship between a state sponsor and a rebel group. But powerful states can use a third state—a dealer or broker—as a conduit for military and other support. States that fail to identify an alignment of interests with these intermediary dealers and brokers face strategic failure.

Harvard Kennedy School’s Belfer Center for Science and International Affairs today announced the appointment of Lori Garver and Beth Sanner as non-resident Senior Fellows. Garver is a former Deputy Administrator of the National Aeronautics and Space Agency (NASA) and current CEO of Earthrise Alliance. Sanner was Deputy Director of National Intelligence for Mission Integration and is now Professor of Practice at the University of Maryland's Applied Research Lab for Intelligence Security. They will both share their experience and expertise with students and faculty of Harvard Kennedy School and the greater Harvard community.      

Recap of MEI event "Afghanistan and Its Consequences."

Stephen Walt warns that  should the secessionist impulse ever gain momentum and succeed in breaking up the country, it would squander the United States' most vital geopolitical asset.

Although Russia and Iran have converged around the overarching objective of strengthening the Assad regime, Moscow and Tehran's engagement in Syria illustrates a complex mosaic of overlapping interests, broader regional entanglements, and contending approaches to post-war reconstruction. Russia and Iran's visions on the future of Syria include diverging views on military reform and economic investment. However, these disagreements are unlikely to lead to a breakdown of the relationship. 

Nathaniel L. Moir writes of historical cases in which a U.S. tendency to over-rely on military capabilities and American economic strength proved unwise and how such power eventually proved to be irrelevant. In addition to the Vietnam War as an example, the rapid collapse of the Republic of China and its large military forces in late 1948 and 1949 offers some parallels with the collapse of the Afghan National Army and the Afghan Government, despite the United States investment of trillions of U.S. dollars.

Jacqueline Hazelton writes that regimes battling a counterinsurgency often depend on corruption to stay in power.