Again, it's the decision of the government, in terms of how much it wants to scope out. If it wants to bring in a definite limit on how much should be purchased internationally, it could do so, saying that such and such a percentage of our reductions could be done through this means or through that means.
On the initial cost from carbon capture and storage—this is not low-hanging fruit, per se, at this point in time—this would still require some very significant initial capital investment, but once that's rolling I would expect that the costs would be significantly decreased, not increased.