British Prime Minister Keir Starmer stresses the United Kingdom's intention to provide "robust and credible" security guarantees to prevent Russia from attacking Ukraine again as Russian President Vladimir Putin has yet to sign up to a US-brokered truce proposal as fighting rages on the ground. "We will build up Ukraine's own defences and armed forces and be ready to deploy as a'coalition of the willing' in the event of a peace deal to help secure Ukraine on the land, at sea and in the sky," Starmer said on Saturday after a virtual meeting with 25 European Union and other world leaders as well as Ukrainian President Volodymyr Zelenskyy. "We agreed military planners would convene again in the UK this week to progress practical plans for how our militaries can support Ukraine's future security," Starmer added. The meeting was held after Putin on Friday agreed in principle to an immediate 30-day ceasefire put forward by Washington and already accepted by Ukraine. But on Friday, Putin also said there were issues to work out.

Russia pushed Ukrainian forces out of most of the territory they controlled in the Russian region of Kursk during the past week, raising questions about whether a weeklong US intelligence cutoff materially helped the Russian counterattack. The US said it had restored intelligence sharing and military aid to Ukraine on Tuesday night, after Ukraine agreed to a ceasefire plan discussed in Riyadh for nine-and-a-half hours. Russian efforts to recapture Kursk intensified on March 6, a day after the White House cut off military and intelligence assistance to Ukraine. Russian forces attacked 32 times in Kursk, said Ukraine's general staff. According to Russian military reporters, Russia had prioritised that front, moving some of its best drone operators there and deploying electronic warfare to prevent Ukrainian drone counterattacks.

The Ukrainian military launched its largest drone barrage to date against Russia as talks got underway with US officials in Saudi Arabia. Moscow said Kyiv's strikes on civilian targets undermine the effort to settle the war, despite its own history of hitting civilian infrastructure.

Kyiv, Ukraine – On Sunday, a top Russian security official in Moscow lauded dozens of servicemen who used an abandoned natural gas pipeline as a tunnel to infiltrate a Ukraine-occupied area in the western Russian region of Kursk. "The lid of a boiling cauldron is almost closed! Good job!" Dmitry Medvedev, who served as president and prime minister before becoming deputy head of Russia's Security Council, wrote on Telegram. But a Ukrainian serviceman deployed in Kursk offered a starkly different version of how the Russians barely got out of the pipeline on Saturday – only to be reportedly killed en masse. "Some suffocated right [in the pipeline], some turned back. About a hundred came out in our rear, split into two groups and were almost immediately ambushed by our special forces. And [also killed by] a massive squall of artillery," Evhen Sazonov wrote on Telegram.

Ukraine has targeted Moscow with a large overnight drone attack as Russia's Ministry of Defence says it has shot down 337 unmanned aircraft across the country. "The Defence Ministry's air defence continues to repel a massive attack by enemy drones on Moscow," Moscow Mayor Sergei Sobyanin said on Telegram early on Tuesday. Three people are reported to have been killed and three wounded in the southern suburbs of Moscow, according to Governor Andrei Vorobyov. He added that drone debris damaged at least seven units in a residential building in another suburb southeast of the city. The attack on the Russian capital, hundreds of kilometres from the Ukrainian border, comes before a meeting between United States and Ukrainian officials in Saudi Arabia.

One civilian was killed and three more were reportedly injured in one of the biggest Ukrainian drone attacks on Moscow in months. Moscow's Mayor Sergei Sobyanin said Russian air defence units destroyed at least 69 drones flying towards Moscow in a "massive" attack that later reports said involved more than 90 drones. Four airports in the Moscow region and the Domodedovo train network were forced to suspend services due to the attack. Several apartments were also damaged while Russia's TASS news agency reported a large fire in a car park near the Russian capital. Pro-Russian war bloggers said Kremlin forces have advanced further into the country's Kursk region as part of a major encirclement operation to push out thousands of Ukrainian soldiers holding territory inside Russia.

A sprawling Russian disinformation network is manipulating Western AI chatbots to spew pro-Kremlin propaganda, researchers say, at a time when the United States is reported to have paused its cyber operations against Moscow. The Pravda network, a well-resourced Moscow-based operation to spread pro-Russian narratives globally, is said to be distorting the output of chatbots by flooding large language models (LLM) with pro-Kremlin falsehoods. A study of 10 leading AI chatbots by the disinformation watchdog NewsGuard found that they repeated falsehoods from the Pravda network more than 33% of the time, advancing a pro-Moscow agenda.

Russian and North Korean forces have made significant battlefield advances in recent days in the Kursk region of Russia, threatening Ukraine's supply lines and its hold on a patch of land it hopes to use as a bargaining chip in future negotiations, according to Ukrainian soldiers, Russian military bloggers and military analysts. Working together, a new influx of North Korean soldiers and well-trained Russian drone units, advancing under the cover of ferocious artillery fire and aerial bombardment, have been able to overwhelm important Ukrainian positions, Ukrainian soldiers said. "It's true; we can't stop them," said Oleksii, commander of a Ukrainian communications unit fighting in the area, when reached by phone. "They just sweep us away, advancing in groups of 50 North Koreans while we have only six men on our positions.

A Ukrainian drone hit an industrial facility overnight in Russia's Volga River region of Chuvashia, some 1,300km (800 miles) from the border with Ukraine, the regional governor said on Sunday. There were no casualties in the strike, which was one of the deepest yet into Russia by a Ukrainian drone.

Ukraine's military said it destroyed 46 of 83 Russian drones launched at the country overnight. Another 31 drones were reportedly "lost" and failed to reach their targets. A drone attack on Ukraine's Black Sea port of Odesa damaged energy infrastructure in the area, triggering power and heat supply interruptions in the city, regional Governor Oleh Kiper wrote. Odesa's Mayor Gennadiy Trukhanov said the attack knocked out three boiler plants. A Ukrainian drone attack targeted an industrial enterprise in Russia's southern city of Syzran, the governor of the Samara region said on Tuesday, adding that there were no casualties.