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

A truck pulled in, and drones flew out of it.” From an airbase near Murmansk, in Russia’s far north, came similar stories: “The driver’s running around...drones are flying from his truck toward the base.

Over 40’ Russian planes destroyed in drone attack as Putin’s airbases targeted - Tu-95 and Tu-22 strategic bombers, which Russia uses to fire long-range missiles at Ukraine, were among aircraft struck,

The message came after Ukraine’s forces wiped out and damaged 41 of the Kremlin’s nuclear bombers and aircraft, attacking at least four air bases across Russia in a massive operation.

With 41 military aircraft impacted, the Ukrainian drone attack was described by some commentators as Russia's "Pearl Harbor." The attack on Pearl Harbor in December 1941 was a surprise air raid by Japan on the U.S. during World War II. Kyiv's assault follows ground advances by Moscow troops in recent days in Ukraine's Sumy border region.

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.

Russian Foreign Minister Sergei Lavrov and U.S. Secretary of State Marco Rubio discussed on Sunday prospects for settling the conflict in Ukraine and Russia-Ukraine talks set for Monday in Turkey, Lavrov's ministry said.

At least seven people were killed after Russian officials said “illegal interference” caused a bridge to collapse and a train to derail in Russia.