Statement from National Geographic Society:
National Geographic Society’s cartographic policy is to portray to the best of our ability current reality. Most political boundaries depicted in our maps and atlases are stable and uncontested. Those that are disputed receive special treatment and are shaded gray as “Areas of Special Status,” with accompanying explanatory text.
In the case of Crimea, if it is formally annexed by Russia, it would be shaded gray and its administrative center, Simferopol’, would be designated by a special symbol. When a region is contested, it is our policy to reflect that status in our maps. This does not suggest recognition of the legitimacy of the situation.