Nature World: Russia has blocked the entry of a Greenpeace boat into its waters, the environmental activist group said Wednesday, suggesting that its attempts to stage a peaceful protest were blocked in order to hide the extent of a oil exploration program in operation by Exxon Mobil and Russia's energy giant Rosneft.
Greenpeace said its icebreaker Arctic Sunrise was repeatedly denied entry into the portion of the Kara Sea where the joint oil exploration endeavor is underway offshore north of western Siberia....