Climate disasters raise the salience of climate change’s negative consequences, including climate-induced migration. Policy action to address climate displacement is especially contentious in the U.S., where weak support for tackling climate change intersects with high opposition to...

As more women attain executive office, it is important to understand how gender dynamics affect international politics. Toward this end, we present the first evidence that gender stereotypes affect leaders' abilities to generate audience costs. Using survey experiments, we show that female...

Policymakers often justify border hardening as a response to insecurity. However, evidence for security-based explanations of border fortification is limited. Instead, research points to political economy drivers like cross-border income inequality, migration, and populism. I argue that these...

The adage that “only Nixon could go to China” suggests hawkish leaders face fewer domestic political barriers to pursuing conciliation with foreign adversaries. We explore how this conventional wisdom intersects with prominent gender stereotypes about women’s role in national security. Do...

Ideological and operational credibility are essential to the success of transnational terrorist organizations. We demonstrate that militant groups can leverage large alliance networks to bolster their ideological and operational reputations. Organizations can draw on operational capabilities and...

Terrorist organizations do not operate in isolation. Instead, they forge alliances with one another, which generate a tight network of intergroup relationships. We argue that these relationships serve to increase group capacity, manifesting itself in the ability of a group to conduct deadly...

The causes and consequences of nuclear proliferation have received a great deal of academic attention. However, nuclear weapons are rarely discussed in isolation in policy circles. Instead, nuclear weapons are relevant as part of a category of weapons of mass destruction (WMDs) that includes...