A woman pulls her bags past houses damaged during fighting in eastern Mariupol, Ukraine, Friday, April 8, 2022. Ukraine says it is investigating a claim that a poisonous substance was dropped on the besieged city of Mariupol. Deputy Defense Minister Hanna Maliar said Tuesday, April 12, 2022 it was possible that phosphorus munitions — which cause horrendous burns but are not classed as chemical weapons — had been used. (AP Photo/Alexei Alexandrov, file)