Concerning the RH drive in Russia.
Normally yes, legally Russians drive LH drive vehicles. But the huge number of citizens of Far East territory (Siberia) are importing second hand cars from Japan, the nearest place they can obtain lots of cheap and high quality cars from. In case if we see a vehicle with RH side steering wheel there, it means a car is imported from Japan.
In most cases, to drive these cars safely, the owners are modifying their rear view systems into all-around view systems, while adding additional mirrors or cameras on the front LH side fenders or on the top of LH mirrors or wherever, so the visibility would be perfect including FRONT VIEW from the left side of a car. Otherwise you'd be not able to out-drive a big truck, which completely closes visibility for you. In the above video on the ice of Baikal lake we can also see something additionally fitted on the LH side fender, but difficult to recognize what exactly it is.
Funny thing was, that Russia's government has tried to forbid the law allowing RH drive vehicles to be driven, so to protect their local car manufacturers. But the issue was, that the citizens threatened to organize a revolution. And the government gave up.