What was the International Legal Basis for the Strike on al-Zawahiri?

(Published in Just Security, Aug. 9, 2022)

The killing of al-Qaeda leader Ayman al-Zawahiri in a CIA drone strike has been touted as a political win for President Joe Biden, a vindication for an over-the-horizon counter-terrorism strategy, and even as “justice served.” Yet there appears to be little interest in whether it was lawful. The media has not seriously raised the question, the punditry has not addressed it, and the government has not yet provided any official legal basis for the killing (to be fair, some law and policy blogs, such as Lawfare, Just Security, and Articles of War, have begun to address it). This disregard is problematic, as there are indeed serious questions as to the lawfulness of this strike – and people should be demanding answers.

Let us acknowledge up front that Ayman al-Zawahiri was the second-in-command of al-Qaeda at the time of the 9/11 terrorist attacks on the United States – which were heinous crimes, terrorist acts, and amounted to an “armed attack” against the United States under international law.

Nevertheless, his killing some 21 years later requires a legal justification under international law. What is more, the drone strike also constituted a use of force against Afghanistan, with which the United States is no longer engaged in an armed conflict – and so that too requires legal justification. This essay briefly reviews the international law regimes that are implicated (leaving aside entirely the domestic law considerations, such as the 2001 Authorization for Use of Military Force), and some of the questions regarding the lawfulness of the strike that arise under each regime – and argues that these questions are important.

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Boston and the Dangerous Calls for “Enemy Combatant” Status

(Published in the Huffington Post,  Apr. 30, 2013, and The Truman Doctrine blog, Apr. 30, 2013)

The Obama Administration announced last week that it would prosecute Boston bomber Dzhokhar Tsarnaev in the Federal criminal justice system. This should have been unremarkable, but it came amidst a cacophony of voices demanding that Tzarnaev be classified and treated as an “enemy combatant.” There were calls to similarly classify the Christmas day bomber, the Times Square bomber, and several other terrorist suspects captured in the United States. Such claims have no legal validity, and are indeed dangerous.

The calls for “enemy combatant” status not only came from various so-called pundits on Fox News and the like, but also from more serious quarters. Senator Lindsey Graham criticized the administration, arguing that Tsarnaev should be classified as an “enemy combatant” under the law of armed conflict for the purposes of extracting intelligence.

Alberto Gonzales, former White House in the Bush administration stated in an interview last week that “nothing prevents the President from deciding: ‘This isn’t working, it’s not going the way we hoped it would go, so I’m pulling him out of the criminal justice system and I’m designating him an enemy combatant.'”

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Obama Administration Fails to Address Legality of Targeted Killing

(Published in the Truman Doctrine blog, May, 2012)

In a speech at the Wilson Center on April 30, John Brennan, Assistant to the President on Homeland Security and Counterterrorism, addressed the subject of targeted killing. In particular, he set out to explain the legality, ethics, and operational wisdom of the policy of using drone-mounted missiles to kill suspected terrorists and insurgents in countries other than Afghanistan – that is countries with which the U.S. is not in an armed conflict. His speech was the most elaborate and open statement yet by the administration on the policy, which remains officially covert, but it provided little new analysis, and it did not respond to the most fundamental challenges to the policy.

The stated objective was a laudable one. He acknowledged that the U.S. policy of targeted killing has been the subject of significant international criticism. He referred to President Obama’s commitment, made in his Nobel Peace Prize acceptance speech, that the “United States of America must remain a standard bearer in the conduct of war,” and that “all nations, strong and weak alike, must adhere to standards that govern the use of force.” Moreover, Brennan stated that President Obama understands the need for greater transparency, and the requirement to explain to both the American people and the world the rationales for the policy.

Unfortunately, however, Brennan provided little new analysis to explain how the targeted killing adheres to the governing principles of international law. Harold Koh, legal counsel to the State Department, provided the basic legal justification two years ago – that is, that the U.S. is in an armed conflict with Al Qaeda, the Taliban and associated forces, such that members of those groups can be lawfully targeted as combatants in an armed conflict; and that the U.S. is entitled to use force in the exercise of its inherent right of self- defense.

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