A controversial group opposing Japanese whaling in the Antarctic region on Monday released video showing one of its ships, the Bob Barker, being sandwiched tightly between two larger vessels: a Japanese whaling ship and a Korean refueling tanker. It also shows what's said to be a flash-bang grenade explosion near the stern of the refueling ship, Sun Laurel. The dramatic incident surely ranks as among the most tense in the years-long history of clashes between the whalers and the Sea Shepherd Conservation Society.