It does a host of other things, including inducing vasospasm (increase risk of heart attack), emphysema, other cardiac problems, etc, etc. Cancer is just the tip of the iceberg of what cigarettes cause. Ok, not just the "tip" but it's far from the only thing cigarettes do.
Quick ref:
http://en.wikipedia.org/wiki/Cigarettes#Contents_and_health_effects
Also, drugs that induce apoptosis are hardly new, and there have been many, many, many of them for different CA types. CA's just evolve away from treatments, sadly.
But I'm interested, can you link me to what drug this is?
Wait, is this it:
http://www.economist.com/science/displaystory.cfm?story_id=8548706
If so, that's... not really that promising. It seems to ignore other upcoming CA theories, mainly because it seems to hinge on mito activity, O2 avail and division rate. One current CA theory, that of background "stem cells" that are slow deviding and more insidious, would make this therapy as not quite as effective as the article presents. And that's just one problem. Not to rain on anyone's parade, it's a good idea and the drug in question has been in use already for other things, but it may not be quite the wonder drug that it's presented to be.
Ref again:
http://en.wikipedia.org/wiki/Cancer_stem_cell_theory
Apologies for the slight derail.