Guwahati, Sept. 12 -- Ukraine has struck Russia's largest oil terminal on the Baltic Sea in one of its biggest overnight drone attacks in months.

The air assault struck the Primorsk oil port in the Leningrad region, the final station of the Baltic Pipeline System and a crucial hub for Russia's maritime exports, Ukraine's security services told multiple outlets, reports BBC.

More than half of the 221 drones to Russia were intercepted over the Bryansk and Smolensk regions, where Lukoil facilities were also reportedly targeted, the Russian defence ministry said.

Officials added two civilians were killed in Ukraine's Sumy region when a Russian glide bomb struck a village near the border.

BBC added, "Authorities in the Leningrad region inf...