The US Navy needs multi-mission, long-range autonomous warships that can traverse and fight across the vast waters of the Pacific.

Russia and Ukraine have traded almost daily assaults on each other’s energy infrastructure as U.S.-led diplomatic efforts to stop the nearly four-year war make no impact on the battlefield.

Ukraine has ramped up its strikes on Russian military and energy targets far beyond the front lines in recent months.

HUR claims that the drone strike on Nov. 6 led to a fire in the workshop producing an additive known as agidol, used for aviation fuel.

The drone incursions and the instability on NATO’s eastern flank stem from Russia’s war in Ukraine, now approaching the end of its fourth year. The conflict has become a crucible for drone development, transforming the battlefield into a testing zone for new technology which now has applications elsewhere in Europe.

Russian and Ukrainian troops fought battles on Tuesday in the ruins of Pokrovsk, a transport and logistics hub in eastern Ukraine that Moscow has been trying to capture for over a year.

KYIV/EASTERN UKRAINE, Ukraine (Reuters) -As buildings change hands in chaotic fighting in Ukraine's eastern stronghold of Pokrovsk, defending forces said this week that drones alone could not hold off Russian advances and more soldiers were needed to prevent the enemy infiltrating further.