A third rescue operation is underway in Mariupol to help the remaining Ukrainian civilians trapped inside a besieged steel plant, the Red Cross told CBS News. Ukraine's military says Russian troops are now inside the plant — the last stronghold of the city's defenders. Hundreds of civilians remain trapped in the middle of what has become a fight to the death at the steel works in Mariupol. The civilian rescue operation is underway following the successful evacuation of more than 400 civilians last week. Smoke rises from the Metallurgical Combine Azovstal in Mariupol, in territory under the government of the Donetsk People's Republic, eastern Ukraine, Wednesday, May 4, 2022. Alexei Alexandrov / AP International Committee of the Red Cross spokesperson Chris Hanger called it a "very difficult and dangerous operation." "It's an active conflict," he said. "The routes might be dangerous. There might be active fighting ong . . . read the full article here.