Ukraine said the fully robotic amphibious assault was the first known mission of its kind, demonstrating how drone warfare continues to evolve.

Ukraine said its forces carried out 16,676 ground drone missions in June, up from 7,511 in January.

In the "first combat mission of this type known," a Ukrainian sea drone delivered a ground drone to Russian-held territory on the Kinburn Spit, Ukraine's 123rd Territorial Defense…