Invoking state responsibility is usually a retrospective measure, aiming to remedy a past breach of the law by repairing the damage. However, the example of the Montara Oil Spill serves as a conceptual testing ground for how the regime of state responsibility can be directed toward future actions. This includes institutionalizing oversight as a means of redressing a wrong while seeking to prevent the recurrence of events that caused transboundary harm to the environment.
In 2009, a blowout at the Montara oil field in the Timor Sea resulted in the uncontrolled release of oil and gas for ten weeks. This incident proved to be ˜the worst of its kind in Australia™s offshore petroleum industry history™, causing significant harm to Indonesia’s marine environment. Despite the Federal Court of Australia ordering over one billion United States (US) dollars in compensation for Indonesian seaweed farmers in 2023, the issue of fully addressing the overall harm visited upon Indonesia by the regulatory state, Australia, remains unresolved.
It is argued that the Montara Oil Spill can serve as a turning point for understanding remedies for breaches of international law specific to international environmental law. It moves beyond the general international law restorative approach of state responsibility, based on ex post facto reparations applied to environmental damage, to incorporating prospective measures geared toward prevention by addressing the potential recurrence of such harm. Therefore, this study illustrates how the regime of state responsibility can uniquely reinforce environmental law, offering a new tool that international environmental lawyers have yet to recognise or utilise.
Using the example of the Montara Oil Spill, this article outlines how various elements of the regime of state responsibility”including attribution, breaches of international law, the injured State, legal consequences of a wrongful act, and reparation”set the legal parameters for addressing a legal wrong in accordance with international law. However, these considerations simply set the stage for the distinct role that state responsibility can play in cases of violations related to international environmental law, by focusing on the preventative function of the largely overlooked appropriate ˜guarantees of non-repetition™.
In cases where a state has already suffered transboundary environmental harm, we argue that seeking appropriate guarantees of non-repetition as part of a settlement gives the injured state negotiation leverage against the responsible state. As a result of the preventative foundation of international environmental law, the injured state is well positioned to invoke the International Law Commission™s 2001 Articles on Prevention of Transboundary Harm, providing a foundational framework for creating a future-oriented approach within the context of state responsibility.
In instances such as the Montara Oil Spill, where there appears to be a failure of due diligence resulting in significant transboundary environmental harm, it is argued that the appropriate guarantees of non-repetition further shift the balance of negotiations in favour of the injured State. In such instances, we argue, this allows the injured state, should it choose, to seek the establishment of a bilateral intergovernmental organization to act as a permanent oversight mechanism for implementing a prevention framework.
Authors: Jean Allain (Faculty of Law, Monash University, Melbourne) and Iman Prihandono (Faculty of Law, Airlangga University, Surabaya)
Full article is published at Transnational Environmental Law, and may be accessed through: https://doi.org/10.1017/S2047102525100162
