I believe there is a common mistake in the logic of Kyoto covering only a portion vs "global agreement" covering major emitters: denying Kyoto won't make us any closer to the latter; in fact Kyoto is a step towards the very global agreement.
It feel like a very remote issue when I see this from Japan. However, this kind of discussion related to unconventional fossil fuel sooner or later affects our discussion too, like, methane hydrate, shale gas, etc...., the impact of tar sands seem much bigger.