Several people were injured in Russian firing on a residential part of the eastern Ukrainian city of Kharkiv and the neighbouring city of Vovchansk, officials said on Saturday. In Kharkiv, five people were injured in artillery fire on a residential area, Mayor Ihor Terekhov said on Telegram. In Vovchansk, Russian attacks caused severe damage. “Unfortunately, the city of Vovchansk has been practically completely destroyed by the enemy,” Security Council member Andrey Kovalenko said on Telegram. Ukraine is managing to retain control of Vovchansk despite the repeated attacks, he said. Ukraine is …