Reverend Dr. Martin Luther King, Jr., wrote in his Letter from Birmingham Jail: “Injustice anywhere is a threat to justice everywhere.” That was in April 1963, more than a half-century ago. He had been jailed for his agitation to end injustice against non-white people in his own country, and he would be killed soon after by an assassin who hated him and his vision.

In a 1958 speech at the United Nations, Eleanor Roosevelt took stock of the progress that human rights had made since the proclamation of the Universal Declaration of Human Rights ten years before. Mrs. Roosevelt had chaired the UN committee that drafted the Universal Declaration and had hoped that, in time, it would become “the international Magna Carta of all men everywhere.” Her answer to the question of how to measure human rights progress has become one of the most frequently quoted remarks of the former First Lady:

When on October 13, 2016, the General Assembly appointed by acclamation António Guterres of Portugal as the United Nations’ ninth secretary-general, there was a sense of excitement among the organization's 193 members. For once, so it seemed, they felt they had played an important role not only in choosing the secretary-general but also in appointing a man generally considered to be an outstanding candidate for a position memorably described as “the most impossible job on this earth.” The five permanent, veto-wielding members of the Security Council (Perm Five) still exercised the greatest power in the selection process, as they always had in the past. Yet the candidate chosen appears, surprisingly, not to have been the first choice of either the United States or Russia, two of the Perm Five that until then had effectively chosen the secretary-general between them in an opaque and outdated process. It is doubtful that António Guterres would have been appointed if the General Assembly had not embarked on a novel process to select him.

Proliferation of major conventional weapons (MCW) in larger numbers, at greater levels of sophistication, and to more actors is at best a waste of valuable resources and at worst fuel for more and bloodier conflicts. Given a track record of violence, repression, and corruption, norms against exporting weapons to active conflicts and human rights abusers, as well as norms in favor of transparency in weapons transfers, have grown more salient in recent years. Yet international efforts such as the UN Conventional Arms Trade Treaty show little promise for mitigating these ills. This article finds an alternate route toward moderating global arms transfers. It shows, with supporting data, how the United States, pursuing its own political interests, leverages its massive market power to slow the proliferation of dangerous technology, reduce resources spent in the developing world on weapons, stymie the deadweight losses of corruption in the arms industry, and lower the rewards for human rights abusers.

While the West woke up to the threat to the liberal international order when Donald Trump was elected U.S. president, its decline was apparent even at the height of the Obama-Clinton era. What follows the end of the U.S.-dominated world order is not a return to multipolarity as many pundits assume. The twenty-first-century world—politically and culturally diverse but economically and institutionally interlinked—is vastly different from the multipolar world that existed prior to World War II. China and India are major powers now; and globalization will not end, but will take on a new form, driven more by the East than the West and more by South-South linkages than North-North ones. The system of global governance will fragment, with new actors and institutions chipping away at the old UN-based system. Liberal values and institutions will not disappear, but will have to coexist and enmesh with the ideas and institutions of others, especially those initiated by China. This “multiplex world” carries both risks and opportunities for managing international stability. Instead of bemoaning the passing of the old liberal order, the West should accept the new realities and search for new ways to ensure peace and stability in partnership with the rising powers.

The United Nations High Commissioner for Refugees (UNHCR) reports that the number of requests for international refugee or asylum protection increased fivefold from 2010 to 2015. In the United States these requests are mainly filed by citizens from El Salvador, Guatemala, and Honduras—the countries collectively referred to as the Northern Triangle of Central America (TNCA). These applicants flee their countries of origin to escape threats to their lives and personal safety from gang violence, organized crime, and even police and military agents. Though the violence cannot be classified as a “war,” the daily life of many Central Americans is currently marked by human tragedies comparable to those experienced during the regional armed conflicts of past decades.

Statelessness, or the condition of being formally excluded from citizenship everywhere, has been deemed a “scourge” and “the most forgotten aspect of human rights in the international community” by the newly elected UN Secretary-General, António Guterres. In 2014 the office of the United Nations High Commissioner for Refugees (UNHCR), which has the mandate for the protection of stateless people globally, launched the #IBelong Campaign to eradicate statelessness by 2024. A key component of the campaign is its Global Action Plan to End Statelessness (GAP), which consists of ten actions for governments and other interested parties to undertake to end statelessness worldwide. Since the campaign's ability to end statelessness is only as strong as the regional and local actors who implement the GAP on the ground, this essay examines how the campaign has been implemented regionally. Given that Guterres and others have identified the Americas as having the potential to be the first region to end statelessness by 2024, the current essay evaluates the region's progress toward this goal.

Keeping global temperature rise to within 1.5–2 degrees Celsius above preindustrial levels is looking increasingly unlikely through mitigation alone. While increased adaptation to inevitable climate impacts will be necessary, a new realism is creeping into the climate debate. A growing number of scientists are proposing geoengineering technologies to deal with the expected shortfall, both through carbon dioxide removal and possibly through solar radiation management. But both approaches bring risks and pose significant governance challenges, and would likely affect different communities in different ways. As geoengineering moves mainstream, it is time to put governance at the heart of future discussion, and to broaden the debate from academia to governments, treaty bodies, faith groups, and civic organizations.

The Carnegie Climate Geoengineering Governance Initiative is a major new effort to catalyze this conversation, bringing together players from a wide range of social, geographical, and professional backgrounds. It argues that policymakers need to take an ethical risk management approach, informed by continued research. How should transborder and transgenerational ethical issues be addressed? How will governance frameworks withstand geopolitical change? Can we build on existing international treaties and institutions, or do we need new ones? And most immediately, how should further research on solar engineering be governed—given current plans to start experiments in the stratosphere? In a geoengineered world, who controls the “global thermostat”?

Responsibility is a key theme of recent debates over the ethics of international society. In particular, rising powers such as Brazil, China, and India regularly reject the idea that coercion should be a feature of world politics, and they portray military intervention as irresponsible. But this raises the problem of how a society's norms can be upheld without coercive measures. Critics have accused them of “free riding” on existing great powers and failing to address the dilemma of how to deal with actors undermining societal values. This article examines writing on responsibility and international society, with particular reference to the English School, to identify why the willingness and capacity to use force—as well as creative thinking in this regard—are seen as important aspects of responsibility internationally. It then explores statements made by Brazil, China, and India in UN Security Council meetings between 2011 and 2016 to identify which actors they see as responsible and how they define responsible action. In doing so, it pinpoints areas of concurrence as well as disagreements in their understandings of the concept of responsibility, and concludes that Brazil and India have a more coherent and practical understanding of the concept than China, which risks incurring the label “great irresponsible.”

This article presents a new understanding of the problem of cosmopolitan motivation in war, comparing it to the motivational critique of social justice cosmopolitanism. The problem of cosmopolitanism's “motivational gap” is best interpreted as a political one, not a meta-ethical or ethical one. That is, the salient issue is not whether an individual soldier is able to be motivated by cosmopolitan concerns, nor is it whether being motivated by cosmopolitanism would be too demanding. Rather, given considerations of legitimacy in the use of political power, a democratic army has to be able to motivate its soldiers to take on the necessary risks without relying on coercion alone. Patriotic identification offers a way to achieve this in wars of national defense, but less so in armed humanitarian interventions (AHIs). Two potential implications are that either AHIs should be privatized or that national armies should be transformed to become more cosmopolitan.

The Sahrawi people, who have long lived in the western part of the Sahara, have been housed in refugee camps in Tindouf, Algeria, since 1975—the year that Morocco took de facto control of Western Sahara. Their situation poses many questions, including those regarding the status of their state-in-exile, the role of the Sahrawi Arab Democratic Republic, and the length of their displacement. The conditions in the Tindouf camps present a paradigmatic case study of the liminal space inhabited by long-term refugees. Over the decades, residents have transformed these camps into a state-like structure with their own political and administrative institutions, which has enabled the international community to gain time to search for an acceptable political solution to the long-term conflict between the Polisario Front (the Sahrawi rebel national liberation movement) and the Moroccan government. The existence of a state-like structure, however, should not itself be understood as the ultimate solution for the thousands of people in these camps, who are currently living in extreme poverty, surviving on increasingly meager international aid, and enduring an exceptionally long wait for the favorable conditions whereby they may return to their place of origin.

This essay examines the similarities, but even more the dissimilarities, between (nonrevisionist) just war theory and the laws of war. The similarities are obvious: both just war theory and the laws of war distinguish jus ad bellum from jus in bello, and incorporate the principles of distinction, proportionality, and necessity. The dissimilarities derive from the special character of law. Law needs binary, yes-no standards for drawing lines, for example between armed conflict and lesser forms of violence. Laws come in packages (regimes), so that changing only one law is not always practicable. And legal propositions, unlike philosophical propositions, are often detachable from their reasons and applied in unexpected and unwelcome ways. This is especially important in the stresses of battle, when rules of warfare must be usable “off the shelf” by middle- or lower-ranked personnel with no opportunity for bespoke deliberation. The essay provides contemporary illustrations of these differences.

Climate engineering is subject to the “playing God” critique, which charges that humans should not undertake to control nature in ways that seem to overstep the proper scope of human agency. This argument is easily discredited, and in fact the opposite—that we should “play God”—may be equally valid in some circumstances. To revive the playing God critique, I argue that it functions not on a logical but on a symbolic and emotional level to highlight nostalgia for functional dualisms in the face of the bewildering problem of climate change. It also raises significant questions about the virtue of those who might engineer the climate. These two concerns point to questions about the proper role of human agency. I use the scholarship of Aldo Leopold and H. Richard Niebuhr to argue for a model of human agency based on contextual awareness and responsive, communal responsibility. I conclude with some implications of this view for decision-makers engaging the topic of climate engineering.