None of them have an understanding of outer space. They don't know where it is. They probably know how little is being spent on NASA, but of course they might also claim that $trillions could be wasted that way.
Pres Bush's campaign said that he would look into private property rights in outer space. There are a handful of people on earth that know what the implications of such a thing might be, so it is under the political radar. Other countries have no idea of private property at all, so it won't come up at the UN.
So increase NASA's budget a small amount, replace the space shuttle, retire the ISS when it was going to be retired anyway, and see about keeping a couple of scientists alive on the moon for a couple weeks maybe a decade from now. Oh, and some extended flights that might culminate with a flight past Mars that takes a couple years and doesn't land.
All in line with the Chinese schedule and the Euro schedule, neither of which would be considered ambitious on American terms. No, this new goal isn't ambitious, but it's way ahead of the past 30 years.