The homegrown FP-5 Flamingos struck a military-industrial site in the Russian city of Cheboksary, about 370 miles east of Moscow.

MOSCOW, April 28 (Reuters) - A Ukrainian drone attack caused a major fire at a Russian oil refinery in the city of Tuapse on Tuesday, officials said, in the third attack on the Black Sea port in less than two weeks.

Ukraine’s battlefield innovations are challenging Russia’s artillery, pushing it toward drones, ground robots, and new tactics to sustain battlefield fires.

Russia launched a series of large-scale attacks on Ukraine this week, firing more than 1,000 drones in the last 36 hours, as Moscow launches a new campaign on the battlefield.

Prince Harry said "America was part of the assurance" of Ukrainian security in words that risk inflaming President Donald Trump.

Russia added longer launch rails at a drone base to support newer variants of its Geran family of loitering munitions, satellite images show.

Russia's annual Victory Day parade will be smaller than previous ones as the effects of the war on Ukraine take a toll.

The Russian leader is walking a tightrope: acknowledging public discontent while offering no indication that he might give up on his demands.