premise: Philip Morris cited strong volume gains in Germany, Italy, France, Spain, central and eastern Europe, Russia, the Middle East, Japan, Korea, Argentina and Brazil.
hypothesis: Eastern Europe wasn't important enough to be broken down by country.
reason: Although Eastern Europe wasn't broken down by country, instead lumped together as a region, it wasn't because it was considered 'unimportant'. That's not mentioned in the the context at all. It's also, for the record, a very lovely area.