Explosions have been heard in the sky over Belgorod, the Russian city near the Ukrainian border where Kyiv's forces have previously been accused of hitting military targets. Night footage in which the sound of explosions and car alarms are prominent was posted on social media. Users reported that air defense systems had been deployed during the blasts on Tuesday, although this has not been confirmed. "A loud bang, similar to the sound of an explosion of medium strength, was heard in the center of Belgorod," state news agency RIA Novosti reported. On Monday, one person was injured in a fire...