though the mariupol mayor s office says that russians tricked people into boarding buses bound for dokuchaevsk, a town in russian-occupied territory. cnn could not immediately verify the progress of evacuation efforts in the city. in a press conference in a kyiv underground station president zelenskyy proposed a trade with russia in exchange for ukrainian civilians trapped in mariupol. translator: we offer as civilized people, we suggest humanitarian solution to the conflagration. we offer exchange of civilians. we present an exchange of the wounded. reporter: zelenskyy said he s willing to meet with putin but promised peace talks would be abandoned if ukrainians in mariupol are killed. scott mcclain, cnn, lviv, ukraine. well, that news conference that scott just mentioned was, well, full of surprises including, of course, the location. president zelenskyy spoke to the