Based on a comprehensive empirical analysis of maritime disputes during the twentieth century, this Article argues that international courts cast a shadow that markedly changes bargaining by potential litigating states. In particular, the filing of optional declarations under Article 287 of UNCLOS increases states’ use of non-binding methods of dispute settlement, and the Article theorizes that this occurs because the declarations credibly threaten court involvement and provide more information about likely litigation outcomes. The Article's central finding is that states that file Article 287 declarations have fewer maritime claims, more peaceful negotiations, and less need for judicial dispute settlement.

The strained U.S.-China trade relationship poses a frontal challenge to the multilateral trading system and has broad repercussions for international law. This Article addresses three dimensions of this relationship: (1) the economic dimension; (2) the geopolitical/national security dimension; and (3) the normative/social policy dimension. The Article advances a middle ground between those seeking to reinforce the World Trade Organization (WTO) system with new rules that limit the state's role in the economy, and those who reject WTO constraints in favor of a power-based system. It proposes pragmatic reforms to govern the interface of the two states’ respective systems across these three dimensions to facilitate ongoing exchange while giving each country latitude to protect itself from the externalities of the other's policies. The result would be greater room for bilateral and plurilateral bargaining, but conducted within the umbrella of the multilateral system.

The International Law Commission (ILC) held its seventy-second session from April 26 to June 4 and from July 5 to August 6, 2021 in Geneva, under the chairmanship of Mahmoud Hmoud (Jordan). This session was originally scheduled for the summer of 2020, but had to be postponed due to the outbreak of the COVID-19 pandemic. The pandemic continued in 2021 to present health risks and travel difficulties for certain members; consequently, the Commission for the first time in its history held its session in a hybrid manner, with many members physically present in Geneva, while others participated online by means of Zoom. That approach required certain adjustments to the Commission's methods of work, but allowed the Commission to move forward in addressing the several topics on its current program of work.

On March 5, 2020, the Appeals Chamber of the International Criminal Court (ICC) decided to authorize the prosecutor to commence a proprio motu investigation into the alleged war crimes and crimes against humanity committed during the Afghanistan War since 2003. This decision is the first case where the requirements for the authorization of an investigation under Article 15(4) of the ICC Rome Statute (Statute) were tested on appeal. The case lays down a marker as to how the ICC sees the division of roles between the Pre-Trial Chamber and the Office of the Prosecutor. The Appeals Chamber proved willing to give the prosecutor broad discretion at the investigation stage. Without limiting principles, this approach may eventually expand the role of the Court beyond what the Statute permits.

On June 17, 2021, the United States Supreme Court reversed and remanded a suit filed against Nestlé USA and Cargill under the Alien Tort Statute (ATS) for lack of jurisdiction. This case has already garnered attention over the nature of the dispute (child slaves in Africa), the Supreme Court's treatment of jurisdiction under the ATS, and the finding shared by five of the nine Supreme Court justices that domestic corporations can potentially be sued under the ATS. This analysis focuses on the child slavery and global supply chain aspects of the decision.

On October 6, 2020, the Court of Justice of the European Union (CJEU) handed down its judgment in Commission v. Hungary. It found that Hungary had violated the General Agreement on Trade in Services (GATS), as well as internal European Union law—specifically the EU Charter of Fundamental Rights (EU Charter). The case arose out of Hungary's 2017 amendment to its higher education law. The amendment imposed two novel requirements on foreign universities operating in Hungary. It barred any non-EU university from operating unless its country of origin concluded a specific enabling treaty with Hungary. Moreover, it required that the foreign university actually provide educational services in its country of origin. While framed in general terms, it is hard to avoid the conclusion that the 2017 amendment was aimed at ending the operations of the Central European University (CEU) in Hungary.

On February 6, 2020, the Inter-American Court of Human Rights (Court) declared in Lhaka Honhat Association v. Argentina that Argentina violated Indigenous groups’ rights to communal property, a healthy environment, cultural identity, food, and water. For the first time in a contentious case, the Court analyzed these rights autonomously based on Article 26 of the American Convention on Human Rights (ACHR) and ordered specific restitution measures, including actions to provide access to adequate food and water, and the recovery of forest resources and Indigenous culture. The decision marks a significant milestone for protecting Indigenous peoples’ rights and expanding the autonomous rights to a healthy environment, water, and food, which are now directly justiciable under the Inter-American human rights system.

In July, the United States, the North Atlantic Treaty Organization (NATO), the European Union (EU), and other allies attributed a variety of malicious cyber activities, including the Microsoft Exchange hack, to China. This joint attribution builds on commitments made in June summits with NATO, the G7, the EU, and the United Kingdom, and is consistent with the Biden administration's multilateral approach to confronting cybersecurity threats and China more generally. Still, critics question whether the administration's efforts will succeed in altering the behavior of states that pose cybersecurity threats to the United States.

On May 23, 2021, Belarusian authorities forced a Ryanair flight from Athens, Greece to Vilnius, Lithuania to land in Minsk in response to a false bomb threat and then arrested Roman Protasevich, an exiled journalist onboard the flight. The United States joined much of the international community in condemning the flight's diversion and imposing additional sanctions on Belarusian President Alexander Lukashenko's regime, adding to those levied throughout the last year due to Lukashenko's repression of opposition figures and others who have protested the results of the August 2020 Belarusian election.

On April 1, 2021, the Biden administration issued an executive order reversing the Trump administration's sanctions on International Criminal Court (ICC) personnel. The administration rescinded the sanctions placed upon the ICC prosecutor, Fatou Bensouda, and the head of the Office of the Prosecutor's Jurisdiction, Complementarity, and Cooperation Division, Phakiso Mochochoko, and removed the officials from the Treasury Department's Office of Foreign Assets Control List of Specially Designated Nationals and Blocked Persons. The ICC, European Union (EU), and human rights groups welcomed the reversal.

As the COVID-19 pandemic continues to rage across the world, the United States and its allies are pushing for answers about the virus's origins while China rebuffs inquiry into its early handling of the outbreak. Meanwhile, a growing U.S. stockpile of vaccines has opened new avenues for “vaccine diplomacy,” and the Biden administration has thrown its weight behind an effort to suspend cross-border intellectual property (IP) rules for vaccine manufacturing. In the near term, however, experts expect vaccination rates and access will continue to vary widely between countries depending on their wealth.

In Nestlé USA, Inc. v. Doe, et al., former child slaves who were trafficked into Côte d'Ivoire to work on cocoa farms filed suit under the Alien Tort Statute (ATS) against U.S.-based companies that purchase cocoa from and provide other support to the farms, alleging that the companies aided and abetted child slavery. By an 8–1 vote, the Supreme Court held that the case involved an impermissible extraterritorial application of the ATS under the Court's precedent in Kiobel. The Court declined to resolve whether domestic corporations may be held liable under the ATS, although five justices across several opinions expressed the view that such corporations are not immune from ATS suits. The question of whether the Court should ever create new causes of action under the ATS prompted significant debate, with three justices suggesting that they would overrule Sosa v. Álvarez-Machain and a fourth indicating that there are strong arguments to reject judicial creation of any new ATS causes of action.

Nearly twenty years after the U.S. military began operations against the Taliban in Afghanistan, President Joseph R. Biden reported on August 31, 2021, that the last U.S. combat troops had departed the country. Biden announced on April 14, 2021, that the United States would withdraw combat troops from Afghanistan before the twenty-year anniversary of September 11, 2001, and NATO member states decided to depart the country simultaneously. The withdrawal followed an early 2020 deal between the Taliban and the Trump administration, which conditioned the pullout on Taliban agreement not to harbor terrorists that target the United States and its allies. Over the course of a week and a half in mid-August, the Taliban captured most of Afghanistan's provincial capitals, entering Kabul on August 15. The Afghan government collapsed, and President Ashraf Ghani fled the country. Through the end of August, the United States and other countries conducted a major airlift operation to evacuate their nationals and Afghans considered at risk of Taliban reprisals, though many were left behind amid risks of renewed civil war and humanitarian crisis.

The COVID-19 pandemic generated wide interest in global health law (GHL). The ease of its spread, and its eruption at a time of massive global travel in a city that is a major transport hub, turned it into an unprecedented event in the post-World War II era.