European Union foreign policy chief Kaja Kallas said on Sunday that EU governments were not ready to set a date for Ukraine's membership, despite a demand from President Volodymyr Zelenskiy.Zelenskiy repeated on Saturday that he needed a date as part of security guarantees for a final peace package with Russia."My feeling is that the member states are not ready to give a concrete date," Kallas told a panel at the Munich Security Conference. "There's a lot of work to be done."Ukraine pushing for