Smoke rises from an oil refinery following a Ukrainian drone attack on Moscow last month. Kremlin insiders say recent Ukrainian strikes have strengthened Russian President Vladimir Putin's resolve to keep fighting. Russian President Vladimir Putin is rejecting calls to negotiate peace with Kyiv, three sources close to the Kremlin said, with Ukraine's recent drone strikes on Russia's oil refineries and ports strengthening his resolve to keep fighting for now. Two of the sources, speaking on condition of anonymity, said that Putin was instead likely to escalate the conflict, now well into its fifth year. One of them, who meets regularly with the president, described a "high probability" of escalation in the coming months.

Ukraine's president plans to use the Nato meeting in Turkey to urge Kyiv's allies to deliver the air defence systems it urgently needs to protect it from escalating Russian attacks. Volodymyr Zelensky's call for help rings with extra intensity after Russian missiles rained down on the Ukrainian capital twice in less than a week, crashing into blocks of flats and killing more than 50 civilians. The summit in Ankara will also be a chance for Zelensky to hold a crucial meeting with Donald Trump and press home his case that Russia's brutal attacks are a show of weakness, not strength, and that Vladimir Putin should be pressured into talks towards a dignified peace. The latest strikes on Ukraine come as it has been stepping up its own long-range drone attacks against Russia, hitting oil refineries and military targets there and causing significant fuel shortages and power cuts. To play this video you need to enable JavaScript in your browser. Russian social media accounts are full of videos of people queuing for hours to buy petrol and fighting over what little they're allowed.

Russian troop build-up threatens city seen as key to seizing Ukraine's Donbas Russian troops have infiltrated the strategic city of Kostyantynivka in eastern Ukraine and are now trying to surround it. The entire city is now effectively in a grey zone, no longer controlled by anyone, Ukrainian soldiers have told the BBC. They get into areas behind our backs and in urban conditions it's extremely difficult to push them out, says a Ukrainian drone pilot who operates in that area and prefers to remain anonymous. Kostyantynivka is a gateway to the rest of the Donbas region. If it falls, Russian forces would be able push towards Ukraine's last remaining strongholds in the east, the cities of Kramatorsk and Sloviansk, and move closer to seizing Donbas completely, one of the Kremlin's key objectives in this war.

Moscow oil refinery attack brings Russia's war with Ukraine closer to home There are moments when life in Moscow feels completely normal. In the south-east of the city an oil refinery had been hit during a Ukrainian drone attack - even from a distance the sight was surreal. Thick smoke billowing from the direction of the facility had turned the sky dark. Like a giant black shroud, it hung over the Moscow skyline. As extraordinary and eye-catching this was, so was the reaction of people near the refinery.

Russia’s defense ministry said 555 drones were shot down across the country. Sobyanin said 180 were shot down around Moscow alone.

Ukrainian drones have struck energy and industrial targets across several Russian regions, Russian authorities say, in an escalating campaign of strikes against infrastructure. In Saratov, a region on the Volga River with several oil refineries that has come under regular Ukrainian attack in recent years, Governor Roman Busargin said on Sunday on Telegram that "civil infrastructure" had been damaged in the overnight strikes. In the Kirov region, northeast of Moscow and about 1,300km (800 miles) from Ukraine, Governor Alexander Sokolov said drones had hit a facility in the Urzhumsky district. The Ukrainian army confirmed the attack, saying it had also hit the Lazarevo oil-pumping station in the region. Governors in the Rostov, Voronezh and Belgorod regions, all of which border Ukraine, also reported strikes, and three civilians were injured in Belgorod.

Three people were killed overnight in a large-scale Ukrainian drone attack on the Moscow region, Russian officials have said. A woman died in a house in Khimki, north of the capital, where a person was trapped under rubble, regional governor Andrei Vorobiev said. A man and a woman were killed in the village of Pogorelki. Moscow Mayor Sergei Sobyanin said 12 people were injured in strikes on a city oil refinery. Russia's military said 556 drones were intercepted.

What are Russia's gains from the Iran war? 'We are not losers; we are winners' Russian air attacks kill five at Ukraine's Naftogaz gas facilities At least five people have been killed in Russian air strikes on Ukrainian state-run gas facilities in the Poltava and Kharkiv regions, officials said, a day after Kyiv and Moscow announced unilateral ceasefires to take effect later this week. Three employees and two rescue workers were killed and 37 people were wounded in the overnight missile and drone barrage, Serhiy Koretskyi, the CEO of Ukraine's state energy company Naftogaz said on Tuesday. This was a combined strike involving UAVs (unmanned aerial vehicles) and ballistic missiles," said Koretskyi. He added that the attack cut gas supply to nearly 3,500 customers. Ukrainian President Volodymyr Zelenskyy said Russian authorities had shown "utter cynicism" by announcing a ceasefire and then launching missile and drone attacks on his country. "Russia could cease fire at any moment, and this would stop the war and our responses.

Is the fall of Pokrovsk inevitable? Is Trump losing patience with Putin? Will sanctions against Russian oil giants hurt Putin? Ukraine is working to resume prisoner exchanges with Russia that could bring 1,200 Ukrainians home, President Volodymyr Zelenskyy says, a day after his national security chief announced progress in negotiations. "We are counting on the resumption of POW exchanges," Zelenskyy wrote on X on Sunday.

Is Trump losing patience with Putin? Will sanctions against Russian oil giants hurt Putin? Russian and Ukrainian troops have fought battles in the ruins of Pokrovsk, a transport and logistics hub in eastern Ukraine, with Ukraine's military reporting fierce fighting under way in a part of the city that was key for Kyiv's front-line logistics. Ukrainian President Volodymyr Zelenskyy said he visited troops fighting near the eastern city of Dobropillia, where Ukrainian forces are conducting a counteroffensive against Russian troops. Russia struck civilian energy and port infrastructure in a massive overnight drone attack on Ukraine's southern region of Odesa, the region's governor said in a post on the Telegram messaging app, adding that rescuers extinguished fires and there were no casualties.