In Zaporizhzhia, the densely populated city close to the front line, the security situation is deteriorating.

Russia has been using small drones ⁠flown ⁠via fibre-optic cables to bypass Ukrainian defences ⁠and damage high-voltage electricity substations in the frontline northern Ukrainian region of Sumy, open-source analysis ​shows.

The American defense firm Shield AI has played an increasingly important role in Ukraine's campaign of strikes in Russia.

New initiative to focus ‘100%’ on damaging Moscow’s ability to wage war; strikes on Kyiv injure six. What we know on day 1,599

On Friday alone, Ukraine struck the Ilsky oil refinery in the Krasnodar region, one of the largest in Russia's south, and the Ust-Luga ​oil refining complex in the Leningrad region, ⁠Ukraine's general staff said. Both are frequent targets.

Moscow’s new dilemma is how to protect a much bigger geographic area with limited air-defense capabilities.

Russia has exploited Ukraine’s air-defence weaknesses with a heavy ballistic missile attack early on Saturday.

The war in Ukraine is now in its fifth year. A bipartisan bill would impose heavy financial penalties on purchasers of Russian oil,