Kyiv’s European allies have slapped new sanctions on Moscow, a day after a phone call between U.S. President Donald Trump and Russian President Vladimir Putin failed to produce a breakthrough on ending the 3-year-old war in Ukraine.

It follows Donald Trump saying Russia and Ukraine will "immediately" start negotiating, after a two-hour phone call with Vladimir Putin.

As President Donald Trump prepares for crucial calls with Russian President Vladimir Putin and Ukrainian President Volodymyr Zelenskyy, his administration faces ongoing talks to secure trade deals.

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.