New Delhi, May 20 -- Ukrainian President Volodymyr Zelensky has accused Russia of deliberately delaying peace negotiations to prolong its three-year invasion, as US President Donald Trump pushes for an immediate ceasefire.

Following recent talks in Istanbul between Russian and Ukrainian officials-the first direct negotiations in over three years-Zelensky expressed frustration at Moscow's approach.

"It is obvious that Russia is trying to buy time in order to continue its war and occupation," Zelensky said, dismissing the Russian delegation as "empty heads" at the negotiating table.

Trump, who held separate phone calls with both Russian President Vladimir Putin and Zelensky on Monday (May 19), described his two-hour conversation with Put...