India, Dec. 29 -- Ukrainian President Volodymyr Zelensky said he has asked Donald Trump to provide US security guarantees lasting as long as 50 years, arguing that only long-term commitments would effectively deter any future Russian invasion.

Speaking in an audio message to reporters on Monday, Zelensky said current proposals discussed as part of a peace plan envisage a 15-year guarantee with the option of extension, but stressed that this fell short of Kyiv's expectations. "I would like the guarantee to be much longer," he said. "We would like to consider the possibility of 30, 40, 50 years and then it will be a historic decision by Trump."

Zelensky said security guarantees approved by the US Congress, combined with pledges from count...