Should tobacco companies be required to include death or cancer warning messages on their products?

In many countries tobacco companies are required to include death or cancer warning messages on their cigarette, cigar and other products. Example messages:

"Smoking can kill",
"Smoking seriously harms you and others around you",
"Smokers die younger",
"Smoking causes lung cancer",
"Smoking seriously harms health",
"Smoking kills",
"Smoking causes heart attack".

And other. Should the companies be required to include such messages?