As reported by Censor.NET, he wrote on Facebook.
The press secretary wrote: "The president of Ukraine is going to visit the U.S. on Sept. 18-21. He plans to deliver his speech at the UN General Assembly and the UN Security Council and hold bilateral meetings with heads of states. The talks with both U.S. presidential candidates are also scheduled. The meeting with Hillary Clinton has been already confirmed."
Ambassador of Ukraine to the United States Valerii Chalyi confirmed this information.
"The meeting of Petro Poroshenko and Hillary Clinton next week in New York has been confirmed by the parties. This is good news both because Mrs. Clinton is recovering and hangs on and because it is Petro Poroshenko and Hillary Clinton who earlier headed U.S.-Ukraine Strategic Partnership Commission, which meetings in full-scale format we would like to resume as early as the next year," Chalyi said.