Ukraine's richest man vows to rebuild besieged Mariupol
Rinat Akhmetov, owner of Ukraine's biggest steelmaker Metinvest, vowed to "rebuild the entire Ukraine."
Graves of civilians killed during Ukraine-Russia conflict are seen next to apartment buildings in the southern port city of Mariupol, Ukraine April 10, 2022.(photo credit: REUTERS/ALEXANDER ERMOCHENKO)ByREUTERS