• Ukraine’s air force said it believed the nationwide air-raid alert application may have been compromised. On Sunday, the app briefly displayed nuclear and chemical warnings for Kyiv and several other regions. It also falsely reported that Russia had launched its hypersonic Oreshnik missile. The air force said the alert service appeared to have been affected by hostile interference and stressed that there was no radiation danger, urging residents to remain calm and rely on official updates.

Ukraine’s air force said it believed the nationwide air-raid alert application may have been compromised. On Sunday, the app briefly displayed nuclear and chemical warnings for Kyiv and several other regions. It also falsely reported that Russia had launched its hypersonic Oreshnik missile. The air force said the alert service appeared to have been affected by hostile interference and stressed that there was no radiation danger, urging residents to remain calm and rely on official updates.

• Several hours later, Russia said its own emergency-warning application had come under what it described as a large-scale cyber-attack. The service is intended to notify users about drone threats and other emergencies. Russia’s emergencies ministry said attackers had gained the ability to distribute false messages through the mobile application, warning the public not to trust unverified alerts.

Several hours later, Russia said its own emergency-warning application had come under what it described as a large-scale cyber-attack. The service is intended to notify users about drone threats and other emergencies. Russia’s emergencies ministry said attackers had gained the ability to distribute false messages through the mobile application, warning the public not to trust unverified alerts.

• Ukraine’s military said it evacuated 167 people from parts of the southern Kherson region on Sunday as a short local ceasefire came to an end. The announcement followed the evacuation of residents by bus from the Russian-controlled town of Oleshky two days earlier. A six-day truce covering Oleshky and nearby areas had been arranged through mediation involving US first lady Melania Trump and Pope Leo. Neither side reported violations during the pause, which a Ukrainian lawmaker called the most significant easing of tensions since 2022. US-backed talks between Russia and Ukraine are expected to restart this month after being stalled since February.

Ukraine’s military said it evacuated 167 people from parts of the southern Kherson region on Sunday as a short local ceasefire came to an end. The announcement followed the evacuation of residents by bus from the Russian-controlled town of Oleshky two days earlier. A six-day truce covering Oleshky and nearby areas had been arranged through mediation involving US first lady Melania Trump and Pope Leo. Neither side reported violations during the pause, which a Ukrainian lawmaker called the most significant easing of tensions since 2022. US-backed talks between Russia and Ukraine are expected to restart this month after being stalled since February.

• Kherson governor Oleksandr Prokudin urged residents to be especially cautious after the ceasefire expired and to react quickly to warnings of Russian strikes. A Ukrainian military officer, who spoke anonymously, said there were fears that combat could become more intense once operations resumed. According to the officer, Russian troops across the Dnipro river had used the quiet period to bring in personnel, move ammunition supplies and gather information about Ukrainian positions with surveillance drones.

Kherson governor Oleksandr Prokudin urged residents to be especially cautious after the ceasefire expired and to react quickly to warnings of Russian strikes. A Ukrainian military officer, who spoke anonymously, said there were fears that combat could become more intense once operations resumed. According to the officer, Russian troops across the Dnipro river had used the quiet period to bring in personnel, move ammunition supplies and gather information about Ukrainian positions with surveillance drones.

• Ukraine has resumed strikes on Russian oil refineries despite pressure from Donald Trump ahead of the US midterm elections. Russian state media reported on Sunday that long-range Ukrainian drones caused a fire at the Kstovo refinery in the Nizhny Novgorod region. The incident followed a major attack on another large refinery in the Samara region operated by the state energy company Rosneft. Trump has blamed Ukrainian president Volodymyr Zelenskyy for rising global fuel costs and lifted US sanctions on Russian diesel last month.

Ukraine has resumed strikes on Russian oil refineries despite pressure from Donald Trump ahead of the US midterm elections. Russian state media reported on Sunday that long-range Ukrainian drones caused a fire at the Kstovo refinery in the Nizhny Novgorod region. The incident followed a major attack on another large refinery in the Samara region operated by the state energy company Rosneft. Trump has blamed Ukrainian president Volodymyr Zelenskyy for rising global fuel costs and lifted US sanctions on Russian diesel last month.

• Zelenskyy said on Sunday that Ukraine would halt attacks on Russian oil refineries, a key request from Trump, if Washington supplied Kyiv with Patriot air-defence interceptors. He said Ukraine was prepared to stop refinery strikes if Russia also stopped targeting Ukraine’s energy network. As another option, he said, Ukraine could secure Patriot missiles with funding beyond direct aid. Zelenskyy said that if the systems were supplied for one month, Kyiv would suspend refinery attacks for the same period. The US administration approved the sale of 500 Patriot missiles to Ukraine on Friday, though Zelenskyy cautioned that deliveries could take years. Ukrainian officials have repeatedly warned that stocks of interceptor missiles are running low.

Zelenskyy said on Sunday that Ukraine would halt attacks on Russian oil refineries, a key request from Trump, if Washington supplied Kyiv with Patriot air-defence interceptors. He said Ukraine was prepared to stop refinery strikes if Russia also stopped targeting Ukraine’s energy network. As another option, he said, Ukraine could secure Patriot missiles with funding beyond direct aid. Zelenskyy said that if the systems were supplied for one month, Kyiv would suspend refinery attacks for the same period. The US administration approved the sale of 500 Patriot missiles to Ukraine on Friday, though Zelenskyy cautioned that deliveries could take years. Ukrainian officials have repeatedly warned that stocks of interceptor missiles are running low.