The Kremlin said on Thursday that Russia had reiterated its invitation for Ukrainian President Volodymyr Zelenskiy to come to Moscow for peace talks,as U.S.-led efforts to reach a deal to end the nearly four-year war in Ukraine intensify. Washington-mediated peace talks in Abu Dhabi last weekend have injected some new momentum into efforts to clinch a peace deal, but profound differences persist between the Russian and Ukrainian negotiating stances. An unnamed U.S. official told Axios on Saturday that Zelenskiy and Russian President Vladimir Putin were “very close” to setting up a meeting after the U.S.-mediated talks. Kremlin spokesman Dmitry Peskov, cited by the Interfax news agency, said on Thursday that Moscow had not yet received a response to its invitation for Zelenskiy to come to Moscow. Any meeting between Putin and Zelenskiy would need to be well prepared and results-oriented, Kremlin foreign policy aide Yuri Ushakov said on Wednesday.