The European Union's foreign policy chief Kaja Kallas's statement on May 28 about the embassies in Kiev caused confusion between Washington, Brussels, and Kiev. Kallas said that the US embassy was the only foreign mission to leave Kiev after the threat of a possible major Russian attack. This statement was soon proven incorrect. With denials from Washington and a step back from Brussels, uncertainty arose about what the statement was actually based on. According to sources familiar with the matter, Kallas's words were mistakenly linked to a separate incident. Allegedly, this confusion was associated with an event on May 24 and stemmed from a misunderstanding of information provided by Ukrainian officials. It was reported that Ukrainian Foreign Minister Andrii Sybiha said at talks in Cyprus on May 27 that Americans had left Kiev. However, a Ukrainian official later indicated that this was probably confused with a previously planned visit by the US chargé d'affaires Julie S. Davis to Lviv. The US side confirmed that Davis participated in programs to strengthen relations with Ukraine in Lviv and Ivano-Frankivsk and that there was no plan to evacuate personnel. The Ukrainian Foreign Ministry did not comment on the matter. The confusion emerged after Russian Foreign Minister Sergey Lavrov told US Secretary of State Marco Rubio during a phone call on May 25 that Moscow planned attacks on command centers in Kiev. This warning led some European missions to reaffirm that they would stay in the city and prompted capitals to summon Russian ambassadors in protest.