Associated Press: Russia will modernize its icebreaker fleet and station more researchers in the Arctic as part of its push to stake its claim to the vast resources of the disputed polar region, a presidential envoy said Thursday. Artur Chilingarov, a famed polar scientist who was recently appointed to the post, said that Russia’s sizable icebreaker fleet gives the nation a strong edge in Arctic exploration. He said that Russia would build a new Arctic research ship to supplement the Akademik …