“According to our estimates, this is more effective as a deterrent than something applied in advance,” RIA Novosti quoted her as saying.

Psaki also said that the US administration is not yet ready to disclose the content of Washington's responses to Russia's proposals on security guarantees.

Earlier, the head of EU diplomacy, Josep Borrell, said that following the meeting of EU foreign ministers on January 24, it is not planned to announce any anti-Russian sanctions.