Europe

Joseph Nye considers lessons from his own work on preventing the spread of nuclear technology in the 1970s.

Matthew Evangelista examines the precedents and possibilities for postwar European security.

Matthew Evangelista examines the precedents and possibilities for postwar European security in an interview with International Security Executive Editor Jacqueline L. Hazelton.

Stephen Walt elaborates on the multiple obstacles that Europe faces on the way to military autonomy.

Mariana Budjeryn reflects on the tenth anniversary of her native Ukraine's Revolution of Dignity.

Kari A. Bingen and Heather W. Williams write that if Russia plans to deploy nuclear weapons in space to target satellites, the threat is definitely serious—and the U.S. should act fast.

The Harvard Project participates in a major Harvard initiative aimed at reducing emissions of methane, a powerful greenhouse gas. Participating researchers represent a range of academic disciplines and Harvard schools.

Russia’s invasion of Ukraine in February 2022 disrupted the European security landscape and forced political leaders to reconsider their strategic relationships. Galvanized by Russia’s aggression, NATO is at its strongest point in the 21st century; Hungary remains Russia’s closest ally within the Alliance, however, and is often a thorn in its side. If the U.S. can engage with Hungary, it ultimately enhances NATO's collective strength and cohesion - not solely for the support of Ukraine against Russia’s invasion, but for the enhancement of European security in the coming decades. 

Stephen Walt analyzes U.S. reliance on its toolbox of coercive instruments and stubborn adherence to unreachable objectives. He concludes that both are significant obstacles to a more effective U.S. foreign policy.

Stephen Walt argues that if the world is entering a period of defense dominance—and if the resolve of most states is greatest in their immediate surroundings—then the ability of any country to wield vast and unchallenged global influence will decline. In such a world, the United States will have to pick its battles more carefully than it has in the past.