Aug 12 (Reuters) - A major Ukrainian attack on Russia's Black Sea port city of Novorossiysk hit warships at a naval base and forced two major grain terminals to halt operations on Wednesday, according to Russian and Ukrainian officials as well as grain industry sources.

Russia launched drones and a missile into Ukraine overnight into Sunday, the air force in Kyiv said, as the country kicked off independence day celebrations marking the anniversary of its 1991 declaration of independence from the Soviet Union.