On Monday, Trump announced Vance as his running mate for the 2024 presidential race.
"This is a disaster for Ukraine," the official was quoted by the newspaper as saying.
Vance is known for criticizing the US multi-billion dollar military aid to Ukraine and calling for talks with Russia. He has also said that Kiev's goal of restoring the 1991 borders was unrealistic, and that a settlement of the conflict required the consolidation of Ukrainian neutrality and the freezing of territorial disputes.