Today's episode begins in the besieged Ukrainian city of Mariupol, where yesterday's deadly bombing of a maternity hospital -- which President Zelensky labelled an "atrocity" and "genocide" -- occurred despite Russia having agreed to a 12-hour ceasefire. To date there's been no word from the Russians to refute that assessment. The WHO says there have been 24 verified attacks on healthcare facilities in Ukraine since the invasion began.

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