Western leaders warn Putin is buying time as U.K. and EU announce sanctions targeting Russia's military, energy, and illegal oil transport amid ongoing Ukraine conflict.

The Russian president abruptly canceled plans to meet face-to-face with Zelensky in Turkey last week. President Zelenskyy, left, and Vice President Vance greet each other as Secretary of State Rubio, center, looks on at St. Peter's Square Sunday. AP/Gregorio Borgia

Russia has battered Ukraine overnight with its largest drone attack since the war began, Ukraine’s military said Sunday, as Moscow intensified its military assault despite holding direct peace talks with Kyiv Friday.

EU imposes new sanctions on Russia, targeting almost 200 shadow fleet ships.