As it has been said, no country or nation can actually control the weather - not yet, anyway. However, every country can contribute to our weather getting better or worse. Global warming is not a myth. Neither were such influences as the gases we put into pressure-packs that eventually created a mighty hole in the ozone layers over the north and south poles a few years back.
I don't think it just a normal phase or change which has brought about the atrocious weather conditions we're now experiencing around the world. If they were happening just now and again one could put it down to normalcy.
We humans are stuffing up the world, no doubt about it. Moreover, unless we change radically over the next few decades the whole world will probably have the same sort of air that the people of Beijing have to put up with.
Trouble is, the changes come subtely, gradually, and even now there are skeptics who think it all being made up by a radical 'Green' element...