(Reuters) -Ukrainian President Volodymyr Zelenskiy said on Thursday that U.S. President-elect Donald Trump could be decisive in the outcome of the 34-month-old war with Russia and help stop Kremlin leader Vladimir Putin.

Ukrainian President Volodymyr Zelenskyy says U.S. President-elect Donald Trump is “strong and unpredictable” and those qualities can be a decisive factor in his policy approach to Russia’s invasion of Ukraine.

Three years after Russia's full-scale invasion of Ukraine, Ukraine has cut off Russian natural gas supplies to Europe, not only blocking a major customer of Russia's gas but eliminating a point of leverage Russia could use against Europe in discouraging assistance to Ukraine.

Earlier reports from the Wall Street Journal indicated that Trump’s team is considering a plan to delay Ukraine’s NATO membership by at least 20 years in exchange for continued Western arms supplies and the deployment of European peacekeepers to monitor a ceasefire.

Trump, who takes office on 20 January, has said he will end the nearly three-year conflict in “24 hours” once in power, a claim that has drawn scepticism from Kyiv, which fears it will be forced to give up land for peace.

Russia rebuffed incoming US President Donald Trump’s call for an immediate ceasefire in Ukraine, while saying it’s ready to hold negotiations on a long-lasting peace agreement to end almost three years of war.

Putin last outlined our conditions for ending the conflict on Dec. 19. So far, nothing from the incoming U.S. administration suggests anything of interest to us," Russia's envoy to the U.N., Vasily Nebenzya,

Ukrainian President Volodymyr Zelenskyy says President-Elect Donald Trump is capable of “stopping” Russian President Vladimir Putin, according to The Sun’s translation of a Ukrainian television