I wonder how much Korea is really trying to get its citizens to cut back. Smoking is practically a religion there, and it seems like more than half of all adult males smoke (based on personal observation, not any serious data).
Increasing the price of cigs is a good start, since they cost next-to-nothing, relative to the US. They're about $1.60 a pack for the good ones (Dunhill, for example), and less than a buck for some of the local brands.
Smoking is also accepted almost everywhere, by men that is. Women are prohibited by law from smoking in public unless they're under some sort of cover (awniing, building entranceway or umbrella).
I'd be happy to see the rate there decline, if for no other reason than to be able to hang out in a bar and not have to wash everything I've been wearing as soon as I got home in order to keep my apartment from reeking. (Provided I were to go back to Korea, of course.)