Volunteers are grappling with environmental havoc across more than 35 miles of coastline, after at least 3,700 tons of heavy oil spilled into the Kerch Strait.

Russia’s top investigator Alexander Bastrykin has ordered law enforcement authorities to launch a criminal investigation into alleged “failures” in addressing the cleanup of a major oil spill along the Black Sea coast in southern Russia.

Explosions were reported in Kharkiv, Dnipro, and other cities the morning of Dec. 25, as Russia launched a mass aerial attack across Ukraine. At least two civilians were hospitalized.

The drones were launched from Bryansk, Millerovo, and Primorsko-Akhtarsk in Russia, the military said. Read also: Shahed drones' components warehouse destroyed in Russia The attack was countered by anti-aircraft missile forces,

Ukrainian drones targeted a major Russian military airfield in a massive attack on Monday night. Eight UAVS were reportedly shot down over the Millerovo airbase, while another nine were downed over the Rostov region,