Many U.S. investors see Philip Morris International (NYSE: PM) simply as the global extension of the cigarette business that Altria Group (NYSE: MO) continues to run domestically. Looking at Philip Morris that way belittles the importance of the global tobacco giant, which has a presence in more than 180 markets around the world. There’s a lot about Philip Morris that most investors don’t know about, and the following five facts play a key part of the long-term investing thesis for the stock.