Vaping: FDA approves e-cigarette in US for first time - BBC News:

Explaining the FDA's reasoning, Mitch Zeller, its director for tobacco products said: "The manufacturer's data demonstrates its tobacco-flavoured products could benefit addicted adult smokers who switch to these products - either completely or with a significant reduction in cigarette consumption - by reducing their exposure to harmful chemicals."

This is a surprisingly sane ruling so far. I would rather vape than smoke, and I know I have felt better heath-wise since switching.