Ukraine war latest: Russia launches attack on Kharkiv, injuring at least 47 people
Key developments on Aug. 31 - Sep. 1: * Russia attacks Kharkiv, injuring at least 47, including medics, children * Russia claims 158 drones downed in mass attack targeting refinery, power plants in Moscow, other regions * F-16 fighter jet in Ukraine unlikely shot down by 'friendly fire,' NYT suggests * Ukraine presents