Ukrainian Air Force Confirms Breach in National Alert System

Residents of Kyiv and other Ukrainian cities received digital warnings on Sunday that indicated nuclear and chemical threats in their areas. The alerts appeared in the national air raid application for a short period before being corrected. One erroneous message also claimed that Russia’s hypersonic Oreshnik missile had been deployed. The Ukrainian Air Force stated on Telegram that the app appeared to have been subjected to enemy influence. The service urged the public to remain calm and noted that there was no radiation threat.

Hours later, Russian officials reported a similar disruption on their side of the conflict. The Ministry of Emergencies announced early Monday that a massive cyber-attack had targeted its mobile application. The attack allowed unauthorized users to send false information to the public about incoming drone attacks and other threats. Moscow confirmed the breach in a post on its official Telegram channel.

In southern Kherson, the temporary local ceasefire that had held for six days expired on Sunday. Ukrainian forces evacuated 167 people from areas in the region as the truce ended. This pause in fighting had been mediated by U.S. First Lady Melania Trump and involved Pope Leo. The agreement facilitated the movement of residents out of the Russian-held town of Oleshky. Ukrainian lawmakers described the period as the biggest de-escalation since the war began in 2022.

Oleksandr Prokudin, the governor of Kherson region, warned local residents to stay vigilant as the fighting resumed. He instructed people to respond immediately to warnings about Russian attacks. A Ukrainian military officer speaking to AFP said that Russian forces across the Dnipro river used the quiet period to amass troops and transport ammunition. The officer said Russian units also collected intelligence on Ukrainian positions using surveillance drones. The officer expressed concern that the fighting would be worse than before once the truce collapsed.

Ukraine continued its campaign against Russian fuel infrastructure despite pressure from Washington. Long-range Ukrainian drones set fire to the Kstovo refinery in Nizhny Novgorod oblast on Sunday. This strike followed a major attack on a Rosneft-owned refinery in Samara oblast. U.S. President Donald Trump has blamed Ukrainian President Volodymyr Zelenskyy for rising global fuel prices. The White House lifted U.S. sanctions on Russian diesel last month.

Zelenskyy told Fox News on Sunday that Ukraine would pause attacks on Russian refineries if the United States provided Patriot interceptor missiles. He stated that Kyiv could find funding for the systems if they were supplied. Zelenskyy proposed a one-month exchange where Ukraine would cease refinery strikes for the duration of the Patriot delivery. The U.S. State Department approved the sale of 500 Patriots to Ukraine on Friday. Zelenskyy warned that deliveries could take years, noting that Ukrainian supplies of the interceptor missiles have been dwindling for weeks.

U.S.-mediated talks between Russia and Ukraine are scheduled to resume this month. The negotiations had been effectively frozen since the United States and Israel launched joint strikes on Iran in February. The diplomatic pause aligns with the recent escalations in drone warfare and the expiration of the Kherson truce.