Ukraine's richest man Rinat Akhmetov has pledged to rebuild Mariupol where his mining and steel company Metinvest is based. He added, "My ambition is to return to a Ukrainian Mariupol and implement our (new production) plans so that Mariupol-produced steel can compete in global markets as before." According to Forbes magazine, Akhmetov's net worth currently stands at $3.9 billion.