Jun 11, 2026, 07:00 PM UTC

Ukrainian forces are engaged in urban combat in Kostiantynivka against infiltrating enemy personnel, with assault units participating in clearing efforts. A battalion commander described the city 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, Commander-in-Chief Oleksandr Syrskyi reported that Ukrainian drone units engaged nearly 180,000 Russian targets in May, asserting a 1.5 to 1 advantage in FPV drones. Sources: Громадське, Радіо Свобода

Following continued military exchanges across the Middle East, US President Donald Trump initially announced plans for a "very strong" strike on Iran, threatening to "bomb the shit out of Iran" if a proposed agreement was not reached. He also reiterated intentions to seize Kharg Island and other Iranian oil infrastructure. American forces subsequently conducted "massive strikes" on Iranian military facilities, reportedly using several dozen Tomahawk missiles. In retaliation, Iran attacked US military sites in Bahrain and Kuwait and declared the closure of the Strait of Hormuz. However, hours after his initial threats, President Trump stated he had canceled further planned strikes on Iran. The April ceasefire between the nations was described by Trump as "the most violated in history."

Sources: Українська правда, Радіо Свобода, Forbes Ukraine, Громадське

Ukrainian forces reportedly conducted a "Neptune" missile strike on a Russian military facility in Sevastopol on the night of June 11. This development follows a confirmed second attack in June on the Chonhar bridge, which sustained critical damage and remains fully blocked, compelling Russian forces to seek alternative supply routes to Crimea. Russian-appointed authorities had previously reported the bridge's closure on June 9, attributing it to an alleged drone attack where over 20 unmanned aerial vehicles were reportedly intercepted. Concurrently, the bridge connecting Henichesk to the Arabat Spit was also closed following an alleged Ukrainian missile strike. Commander Robert Brovdi of Ukraine's Unmanned Systems Forces reiterated Ukraine's objective to isolate Crimea by gaining full control of the "Novorossiya" highway. Separately, Russian forces attacked Konotop, resulting in one fatality.

Sources: Громадське, Радіо Свобода

Slovenia has announced the cessation of temporary border controls with Croatia and Hungary, which were initially implemented in October 2023 for a period of six months. The Slovenian Ministry of Interior had introduced these measures in response to the evolving security situation in the Middle East following the Hamas attack on Israel, and after Italy had also reinstated its own border controls. The decision to lift these temporary measures, which aimed to enhance security, was reported by the STA news agency. Sources: Українська правда (reporting STA).