Ukraine has launched a major attack on a crucial oil pipeline in Russia, in another blow to President Vladimir Putin's forces

Ukraine has attacked part of an oil pipeline in Russia as Moscow is tipped to use its lethal new intermediate-range ballistic missile again.

Ukraine struck a southern Russian port on the Azov Sea with missiles and triggered a fire at an oil depot in the western Bryansk region with drones, officials and various media and sources said. The extent of damage and weapons used in the port attack were unclear,