Articles

Recent quantitative scholarship uses warhead counts to examine whether nuclear superiority offers political or military benefits beyond having a secure second-strike capability. These analyses overlook other elements of a state’s nuclear capability such as state perceptions and beliefs.

Many countries across the Middle East and North Africa, or MENA, region have faced critical challenges in ensuring the effective and equitable vaccination of their citizens against COVID-19. With a few exceptions, like Morocco, Israel and several Gulf states, countries in the region have faced difficulties in securing sufficient doses due to logistical constraints, poor planning and vaccine hesitancy. As of mid-August, only 21 percent of the region’s population had received at least one dose, and less than 13 percent were fully vaccinated. This puts the region far behind the developing country average of 36 percent with at least one dose and 22 percent fully vaccinated. Moreover, while some countries have accelerated their vaccination campaigns under the pressure of recent COVID-19 surges, other campaigns seem to be slowing or stalling. As countries brace for new waves of the pandemic, MENA governments—and their international supporters—must find ways to address the root causes of their halting vaccination campaigns.

This study provides a whole-systems simulation on how to halve global CO2 emissions by 2050, compared to 2010, with an emphasis on technologies and costs, in order to avoid a dangerous increase in the global mean surface temperature by end the of this century.

Election violence varies significantly within countries, yet how and why are undertheorized. An analysis of gubernatorial elections in Nigeria reveals the conditions under which elites recruit popular social-movement actors for preelection violence.

A comparative analysis of the United States’ and the Soviet Union’s previously underexplored radiological weapons programs identifies the drivers behind their rise and demise. The findings of this analysis illuminate the factors likely to affect the pursuit of radiological weapons by other states in the future.

The administration of President Donald J. Trump has consistently used fear of China to undermine nearly five decades of bipartisan consensus on US–Russian nuclear arms control. The negative consequences of these actions may last far beyond the Trump presidency. If generations of agreement between Democrats and Republicans on bilateral nuclear treaties with Russia erode, it will pose a significant setback to US national security and global stability. Future leaders may ultimately need to consider new approaches to nuclear risk reduction that preserve the benefits of the arms control regime.

Harvard University has created a Presidential Committee on Sustainability (PCS) to advise President Larry Bacow and the University's leadership on sustainability vision, goals, strategy, and partnerships. The Harvard Gazette spoke with committee chairs Rebecca Henderson, the John and Natty McArthur University Professor; John Holdren, the Teresa and John Heinz Professor of Environmental Policy at Harvard Kennedy School; and Katie Lapp, executive vice president, about why it is so important to act now; the role of the PCS in developing collaborative and innovative projects; and how the campus community can get involved.

Delta Force commandos took two Islamic State fighters as prisoners and a trove of intelligence from the now-destroyed compound where AbuBakral-Baghdadi, the world’s most wanted terrorist, had been hiding, officials said Monday.

In post-conflict societies, divisions can emerge between returnee and nonmigrant groups, which can in turn lead to violence and destabilization when government institutions favor one group over another.

In Pakistan and Nigeria, jihadist entrepreneurs have capitalized on external trigger events not only to successfully challenge established religious doctrine and norms, but to adopt radically new norms, including the use of gendered violence.