donbas offensive began. trying again in the coming hours in the besieged port sea of mariupol. deputy prime minister reports a humanitarian corridor did not work on wednesday. russian forces were not able to a proper cease-fire. and president volodymyr zelenskyy says his forces do not have the heavy weapons neededto defend the city. translator: according to our information, they are keeping 120,000 people in besieged mariupol. crimes happening there are far more scarier and larger skalg than boardian ka. i am confident with combined efforts, we can brick all those to justice, and i promise you we will find them all. two senior-ukrainian noeshtders say they are prepared to travel to mariupol to secure the evacuation of civilians and soldiers. ask a u.s. state department official say tells cnn nato allies could also be part of process. we have more now from cnn s matt