Russian drone attacks a bridge in Kyiv.
The Russian defence ministry also said its air defence forces had intercepted and destroyed 559 Ukrainian drones between 2000 Moscow time (1700 GMT) on Saturday and 0800 Moscow time (0500 GMT) on Sunday. It also reported attacks on a Nova Poshta logistics centre in Chornomorsk and a data centre in Odesa, Reuters reported.
The Russian defence ministry also said its forces hit two dry cargo vessels carrying military equipment to the port of Odesa in the northwestern Black Sea. In an earlier statement, the ministry said Russian forces had struck a dry cargo vessel east of Odesa overnight. Ukrainian President Volodymyr Zelenskiy had told Reuters that Kyiv would step up attacks on Russian oil refineries. The drones were intercepted over several Russian regions as well as areas above the Azov and Black seas, according to the ministry.
The latest attacks came after Russian authorities vowed to intensify strikes on Ukraine. Russia on Sunday said its forces struck the Northern bridge over the Dnipro River in Kyiv, alleging that the route was being used to transport Ukrainian troops and military cargo.

