Seventy-four people remain stranded in the frozen waters off of Antarctica, waiting to be airlifted.
The passengers and crew aboard a Russian research ship sent out a distress signal five days ago; several attempts to get them out with special icebreaker ships have been unsuccessful.
The Russian Foreign Ministry says the trapped passengers will be rescued by helicopter once the bad weather clears, but time is running out.
CNN's Sunlen Serfaty has the story.
Two deadly suicide bombings in southern Russia are stoking fears of a terrorist attack on the Winter Olympic Games in Sochi, which are just six weeks away.
At least 30 people were killed in the two blasts in the city of Volgograd, located just 400 miles northeast of Sochi.
An explosion Monday hit a trolleybus near a busy market during the morning rush hour.
Another blast Sunday targeted Volgograd's main train station, a transit point for people traveling by train to the site of the Winter Games.
No one has claimed responsibility for the blasts, but the leader of a Chechen separatist group has pledged violence to disrupt the Olympic Games.
Jeff Beatty, a former CIA counter-terrorism officer, is OutFront.