Ukrainian defenders struck an oil terminal at the seaport of Novorossiysk in Russia's Krasnodar Krai overnight into Friday, a source in the security forces told hromadske. The port ranks as Russia's second-largest oil export center and a vital logistics node for petroleum products via the Black Sea.

Rustem Umerov, Secretary of Ukraine's National Security and Defense Council, has arrived in the Turkish city of Istanbul to unblock the prisoner swap process, he announced on Facebook.

A Russian strike knocked out power to eight coal mines in Ukraine's Dnipropetrovsk Oblast, trapping 2,595 miners underground at the time, according to the Energy Ministry.

A former commander of Kyiv's Berkut riot police unit was sentenced in absentia to 10 years in prison for concealing crimes against Maidan protesters on February 20, 2014, the Prosecutor General's Office announced.