The mayor of the besieged Ukrainian city of Mariupol on Wednesday called for a no-fly zone to be implemented over Ukraine after a Russian airstrike devastated a maternity hospital. In a video message posted to Telegram, Mariupol Mayor Vadym Boichenko asked for the global community to “close the sky over Ukraine.” “Today I am asking the global community for help. Close the sky over Ukraine. Our will has not been broken, we will fight to the end,” Boichenko said. “We have motivated soldiers and officers who defend our homeland. But today we need support.” The head of the Donetsk regional military administration, Pavel Kirilenko, said 17 people were injured in the strike. Nobody was killed, he said. “Currently, 17 wounded and women have been confirmed. As for children … zero confirmed [injuries]. As for the victims, the number remains at zero,” Kirilenko said Wednesday, Ukraine’s Interfax news agency reported. Kirilenko …