WASHINGTON, May 21 – Washington doesn't plan to place anti-ballistic missile systems in Ukraine, U.S. Department of State Spokeswoman Marie Harf said.

"Well, there's no offer or plan to place U.S. or NATO ballistic missile defenses systems in Ukraine and I don't think we're exactly sure what they're [Ukrainian officials] referring to," she said when being asked by the journalist to comment on the recent statements of the Ukrainians authorities.