Ukrainian President Volodymyr Zelenskiy said negotiators discussing a US-brokered peace initiative remain divided over territory as President Donald Trump expressed disappointment in Kyiv’s handling of the deal.

Elements of the US plan require further discussion on a number of “sensitive issues,” including security guarantees for the war-battered nation and control over eastern regions, Zelenskiy said in a phone interview. The Ukrainian leader said talks have yet to yield agreement on Ukraine’s Donbas, including the provinces of Donetsk and Luhansk.