The agent had been watching for weeks, carefully observing the movements of Russian patrols, surveillance blind spots and the irregular arrival of the cargo trains.

A nuclear-capable missile fired into Ukraine near Poland sent a message to Europe days after its leaders agreed to postwar security guarantees, Russian analysts said.

President Donald Trump said that U.S. national security officials have determined that Ukraine did not target a residence belonging to Russian President Vladimir Putin in a drone attack last week.

President Trump refuted the Kremlin's accusations that Ukraine targeted a residence of Russian strongman Vladimir Putin, doubting such an attack ever took place. A day after Trump's meeting with Ukrainian President Volodymyr Zelensky at Mar-a-Lago,

The Russian Defense Ministry said on Friday that it had struck western Ukraine with a nuclear-capable intermediate-range ballistic missile, an ominous warning by President Vladimir V. Putin of Russia as U.S.-led negotiations to end the war have gained steam.

Russian President Vladimir Putin's defiant New Year's message contrasts sharply with President Donald Trump's diplomatic push as Ukraine-Russia war approaches fourth year.

Moscow said the overnight strike was in response to an alleged Ukrainian drone strike on a residence used by President Vladimir Putin, which the U.S. and others said did not happen.

President Trump refuted the Kremlin’s accusations that Ukraine targeted a residence of Russian strongman Vladimir Putin, doubting such an attack ever took place.