Ukraine security service sources tell BBC bombers "are burning en masse" - as Russia confirms Kyiv's drone attack.

Retired U.S. military leaders reacted on Sunday after Ukraine carried out a large-scale drone attack on Russian military aircraft deep inside the country, with one quipping that Russian President Vladimir Putin is "having a very bad day.

Ukraine has carried out large-scale drone strikes against four airbases deep inside Russia, destroying multiple combat planes, according to a source in the Ukrainian Security Service (SBU).

Ukrainians are already comparing it with other notable military successes since Russia's full-scale invasion, including the sinking of the flagship of Russia's Black Sea fleet, the Moskva, and the bombing of the Kerch Bridge, both in 2022, as well as a missile attack on Sevastopol harbour the following year.

Multiple bridges collapse across Russia as saboteurs target Putin’s rail network - Russia blames 'interference' while Ukrainian partisans claim credit for third incident in Donetsk

Ukraine needs an initial 500 million euros ($566 million) to rebuild the most important infrastructure facilities at its Black Sea ports destroyed by constant Russian missile and drone attacks, a government minister said on Friday.

Russia once struggled to field its own long range drones until Iran sold them the technology to build their own. Now hundreds hit Ukraine every night.

Hundreds of towns are under evacuation orders in Ukraine’s northeastern Sumy region where Russian forces are focussing their attacks, as Kyiv officials warn it could be preparing a new offensive.Mandatory evacuation orders were issued for 11 settlements on Saturday,