Zaporizhzhia nuclear plant loses external power for 19th time; urban combat continues in Kostiantynivka; Afipsky refinery struck

Ukrainian forces are engaged in urban combat in Kostiantynivka against enemy personnel who have infiltrated the city, with assault units participating in clearing operations. A battalion commander described Kostiantynivka as "semi-encircled" due to Russian advances near Chasiv Yar and Berestky. The Institute for the Study of War (ISW) suggests Russia's primary Donbas offensive focus has shifted to Kostiantynivka from Sloviansk.

Separately, the Zaporizhzhia Nuclear Power Plant (ZNPP) experienced its 19th loss of external power on June 10, around 9 PM, following an attack on an electrical substation. Energoatom confirmed the disconnection of the "ZaTES – Ferrosplavna №1" power line, leading the plant to rely on backup diesel generators, a situation also reported by the International Atomic Energy Agency (IAEA).

Additionally, Ukraine's General Staff confirmed striking the Afipsky oil refinery in Russia's Krasnodar Krai, reporting damage and a fire at the facility. Sources: Громадське, Радіо Свобода