National and international criminal law systems are continually seeking doctrinal and theoretical frameworks to help them impose individual liability on collective perpetrators of crime. The two systems move in parallel and draw on each other. Historically, it has been mostly international criminal law that leaned on domestic legal systems for its collective modes of liability. Currently, however, it is the emerging jurisprudence of the International Criminal Court that is at the forefront of innovation, with the doctrine of indirect co-perpetration taking (...) the lead in international prosecutions. The article assesses the potential contribution as well as the limits of this compound doctrine to domestic criminal law jurisprudence, particularly with regard to small-group criminality. Four modes of indirect co-perpetration are discussed, namely shared control, concerted control, controlling board, and flawed triangle perpetration. A doctrine of indirect co-perpetration would enable liability in these modes of perpetration, perhaps with the exception of the latter, which marks the limits of its applicability. (shrink)

I argue, contrary to standard claims, that accomplice liability need not be a causal relation. One can be an accomplice to another’s crime without causally contributing to the criminal act of the principal. This is because the acts of aid and encouragement that constitute the basis for accomplice liability typically occur in contexts of under- and over-determination, where causal analysis is confounded. While causation is relevant to justifying accomplice liability in general, only potential causation is necessary in particular cases. I (...) develop this argument through the example of the role of U.S. legal officials in abetting the acts of unlawful interrogation that have taken place since 2001. I also suggest that there may be a limited justification for ex post ratificatory accomplice liability. (shrink)

Courts and commentators are notoriously puzzled about the mens rea standards for complicity. Accomplices intend to aid, but what attitude need they have towards the crimes that they aid? This paper both criticizes extant accounts of the mens rea of complicity and offers a new account. The paper argues that an intention can commit one to an event’s occurrence without committing one to promoting the event, or making it more likely to take place. Under the proposed account of the mens (...) rea of complicity, an accomplice must have an intention that commits him to the crime’s occurrence, but need not commit him to making it more likely that the crime occurs. The paper traces the implications of this view both for several difficult complicity cases, and for ongoing debates among philosophers of action about the necessary and sufficient conditions of joint agency. (shrink)

This paper considers some aspects of the morality of complicity, understood as participation in the wrongs of another. The central question is whether there is some way of participating in the wrongs of another other than by making a causal contribution to them. I suggest that there is not. In defending this view I encounter, and resist, the claim that it undermines the distinction between principals and accomplices. I argue that this distinction is embedded in the structure of rational agency.

Michael Moore’s Causation and Responsibility offers an integrated conception of the law, morality, and metaphysics, centered on the notion of causation, grounded in a detailed knowledge of case law, and supported on every point by cogent argument. This is outstanding work. It is a worthy successor to Harte and Honoré’s classic Causation in the Law, and I expect that it will guide discussion for many years to come.