Biden says Putin could use chemical, biological weapons in Ukraine

LVIV/KYIV, Ukraine, March 22 (Reuters) - Russia is pounding the besieged Ukrainian port of Mariupol into the "ashes of a dead land", its local council said on Tuesday, describing two more huge bombs that fell on the city that has been sealed off for weeks.

The plight of Mariupol, a city of 400,000 before the war, has been the most urgent humanitarian emergency since Russia invaded Ukraine nearly a month ago. Hundreds of thousands of residents are believed to be trapped inside under near constant shelling, with no access to...