“The President of Ukraine remains in Kiev and continues to lead his country,” Psaki said.
She did not disclose the details of the negotiations affecting security issues.
Earlier, Psaki announced that the US authorities under no circumstances intend to send American troops to Ukraine to fight Russia.
Pentagon spokesman John Kirby said that, according to the United States, Russian troops are arriving in territories controlled by the Donetsk and Lugansk People's Republics, but do not go beyond them.