Ukraine is working to evacuate all remaining troops from their last stronghold in the besieged port of Mariupol, ceding control of the city to Russia after months of conflict.<br />''<br />''The evacuation of hundreds of fighters, to Russian-held towns, likely marked the end of the longest and bloodiest battle of the Ukraine war and a significant defeat for Ukraine.<br />''<br />''The General Staff of Ukraine's Armed Forces said in a statement that the 'Mariupol' garrison has fulfilled its combat mission. <br />