Ukrainian President Volodymyr Zelensky says he directed his ministers not to sign off on a proposed agreement to give the United States access to Ukraine's rare earth minerals because the document was too focused on U.S. interests.

The proposal, which was a key part of Zelensky's talks with U.S. Vice President JD Vance on the sidelines of the Munich Security Conference on Friday, did not offer any specific security guarantees in return, according to one current and one former senior Ukrainian official familiar with the talks.