Ukrainian President Volodymyr Zelenskyy said the United States had raised the possibility of a new security framework for Europe as part of efforts to end Russia’s war in Ukraine, warning that Moscow could use such discussions to weaken NATO and reshape the continent’s borders.

“In my view, this can be dangerous,” Zelenskyy told reporters Friday. “This should not be the main agenda.” His comments were embargoed until Saturday.

Zelenskyy also said that the United States had asked for the first time whether Ukraine would withdraw from parts of the Donbas region in eastern Ukraine that Russia does not control if Kyiv were admitted to NATO.

He said he believed Moscow was interested in reopening broader questions about European security rather than focusing exclusively on ending the 4 1/2-year war.