Russo-Ukrainian war: Ukraine begins its southern counteroffensive in the Kherson Oblast, eventually culminating in the liberation of the city of Kherson.

The Russo-Ukrainian war began in February 2014 and is ongoing. Following Ukraine's Revolution of Dignity, Russia occupied Crimea and annexed it from Ukraine. It then supported Russian separatist armed groups who started a war in the eastern Donbas region against Ukraine's military. In 2018, Ukraine…