On July 31, local time, an explosion was heard in Kyiv, the capital of Ukraine. Earlier, Kyiv had sounded an air defense alert. Kyiv Mayor Klitschko reported that Kyiv's air defense system is in operation to deal with Russian drone attacks.

On July 31, local time, an explosion was heard in Kyiv, the capital of Ukraine. Earlier, Kyiv had sounded an air defense alert. Kyiv Mayor Klitschko reported that Kyiv's air defense system is in operation to deal with Russian drone attacks.