BBC Radio 5, Up All Night, June 17, 2010 Host Ian Payne
http://www.bbc.co.uk/programmes/b0070h86

There is one clear legal regime, which is the US legislative Oil Pollution Act. And that does provide for foreign claimants to make claims in US courts and be compensated according to the act. There are some limitations on whether that would be available, but the other possibility is through international law. And there is a treaty that governs oil spill response and preparedness in the Caribbean that all of the major countries—the principals in this case—are parties to; that includes Cuba, Mexico, and the United States and other countries.

The American Society of International Law, April 22, 2010 by Cymie R. Payne
http://www.asil.org/insights100422.cfm

The International Court of Justice (ICJ) announced its judgment in a high-stakes environmental dispute between Argentina and Uruguay…. This judgment is a significant step forward in the ICJ’s jurisprudence on environmental law and on shared watercourses. The Court recognized environmental impact assessment as a practice that has become an obligation of general international law in these situations. It further found that general international law does not prescribe the scope or content of such assessments.