AAP: An American icebreaker is on its way from Sydney to the Antarctic to free two ships stuck in ice, in the latest stage of a convoluted rescue mission.
Twenty-two crew remain on board the Russian ship Akademik Shokalskiy, which became trapped after a blizzard pushed sea ice around the ship and froze it in place on Christmas Eve.
The 52 scientists and tourists on board the research ship were airlifted to safety last week, thanks to the helicopter from the Chinese icebreaker Xue Long.
Those...