for chinese stocks you can trade b shares via hong kong - shanghai connect any broker offering access to hkse stocks will allow you to do so. but note the intrinsics between a shares vs b shares. you can even open a bank account + brokerage account in hong kong if you are visiting.
I did a quick search on the web and didn't find this. Do these countries use american or european style options execution?
I didnt realise you were referring to options. China's SSE is still in its infancy stages - on accepting global investment. hence it's geared towards long shares only. b / h shares for foreigners. regarding options, it seems there is no access as of yet to non-resident retail. It will take a long while for retail access to chinese futures/options. The sse bubble was deemed in bad light by the local government, who blamed foreign investors. but of course it was a farce. requirements for a fund to be a qualified investor is very very high. the chinese govt still frets on short selling. given futures/options make this a great possibility, it is very unlikely it will be opened to non-resident retail anytime soon. The next milestones to see are better volume on sse-hk + sz-hk connect pick up & china on msci, before the derivatives market can be opened to outsiders. It appears the only way now is to trade via a trusted chinese resident friend.
Russia is probably not the best investment right not, the thing is that no matter how Trump is inclined to make peace with Russia, he simply can't do it right now.