Russia says its emergency alert app was hacked after Ukraine reported a similar attack

▲ Escalating

Kherson truce expires as Ukraine and Russia report hacks of their alert apps

The localised Kherson ceasefire, described as the longest truce of the war, ended on Sunday evening and was not extended. Within minutes, Ukraine's air force said its nationwide air raid alert app was probably hacked, and on Monday Moscow reported a hack of its own emergency alerts app, with the two sides trading blame. Russian strikes cut power to thousands of people in Ukraine on Sunday, and Russian state media said Ukrainian drones set fire to the Kstovo refinery.

• Ukraine's air force says its alert app was probably hacked and that its warnings no longer matched the real situation; Russia reported a similar hack on Monday.
• Russian state media say Ukrainian drones set the Kstovo refinery in Nizhny Novgorod region on fire after a major strike on a Rosneft refinery in Samara region; the Kremlin says Kyiv is ignoring US wishes.
• The truce allowed civilians to be evacuated from Russian-occupied Oleshky, with evacuees reaching Belarus on Saturday on their way to Ukraine.
• The US has approved the sale of 500 Patriot interceptor missiles to Ukraine, and Erdogan hosted Zelenskyy in Istanbul, where the two agreed to work on a new Black Sea grain corridor.