Kyiv, Ukraine — Russia fired more than 100 drones at civilian areas of Ukraine overnight, authorities said Monday, as the Kremlin dismissed its transportation chief after a weekend of travel chaos when airports grounded hundreds of flights during the busy vacation season due to the threat of attacks from Kyiv.

Russia and Ukraine have exchanged hundreds of drone strikes, causing several deaths and significant disruptions

The Kremlin announced Monday that Russia's transport minister has been terminated. There wasn't any official reason given for why Roman Vladimirovich Starovoit was fired from his post, but he was immediately replaced by Andrei Sergeevich Nikitin,