Thank you for the question.
What I would say is that the arrangement with the United States confirms that, through our assessment of their regulatory regime, it's our view that they have an environmentally sound management of the material.
As I mentioned previously, there's no regime that will guarantee.... There's no way to guarantee any regime, because it's about people's behaviour and whether they choose to comply with the regime. That's why we have robust enforcement and compliance promotion to help ensure that regulatees are adhering to the rules.