NATO fighter jets were scrambled and ground-based air defense systems put on high alert in Poland and Romania during an overnight Russian attack on Ukraine.

NATO scrambled fighter jets in Polish and Romanian airspace overnight as Russia carried out massive drone and missile strikes in western Ukraine, killing at least 25 people, three of them children.

A drone has struck a Turkish-flagged tanker in Ukraine's Odesa region and set it ablaze. Monday's strike at Izmail port came a day after Ukrainian President Volodymyr Zelenskyy signed a deal to import U.

Russia is now using fiber-optic drones with a 50-kilometer reach, a senior Ukrainian official told Business Insider.

DNIPRO, Ukraine (Reuters) -Russian drones damaged a building housing the Dnipro newsroom of public broadcaster Suspilne and Ukrainian Radio Dnipro in a major overnight attack on the city, Suspilne said early on Tuesday.

Ukraine's military said on Tuesday it had attacked military targets in Russia with U.S.-supplied ATACMS missiles, calling it a "significant development." Ukraine has not previously stated openly that it uses the advanced U.

Ukrainian President Volodymyr Zelenskyy plans to visit Turkey this week to revive talks on ending Russia's invasion, which began nearly four years ago

As winter looms and Russian forces adapt their tactics, Ukrainian troops need to double down on technological innovation and flood the front line with more drones to halt Moscow's territorial gains, a senior commander said.