U.S. President Donald Trump's decision to ramp up arms shipments to Ukraine is a signal to Kyiv to abandon peace efforts, Russia said on Thursday, vowing it would not accept the "blackmail" of Washington's new sanctions ultimatum.

Russia now controls more than two-thirds of Ukraine’s Donetsk region — the main theater of the ground war. Russian forces have carved out a 10-mile-deep pocket around the Ukrainian troops defending the crucial city of Kostiantynivka, partly surrounding them from the east, south and west.

Putin’s refusal to compromise on Ukraine, say analysts, is a colossal error costing Russia regional influence, lucrative energy markets and its place in the world.

Russia launched over 30 missiles and 300 drones during its overnight assault that affected 10 regions of the country, Ukrainian President Zelenskiy said.

Multiple cities in Ukraine were targeted by Russian drone attacks overnight, killing one in the Black Sea port of Odesa.President Volodymyr Zelensky said over 300 drones and 30 missiles had been launched at Ukraine,

The United States was moving to get weapons to Ukraine quickly under President Donald Trump's plan for Europe to buy arms, and was weighing selling Patriot air defence systems from its own stocks, Washington's envoy to NATO said Thursday.