"The U.S. Embassy in Kyiv has received specific information regarding a potential significant air attack on November 20. As a precautionary measure, the embassy will be closed, and staff have been instructed to shelter in place. The U.S. Embassy advises American citizens to be prepared to take immediate shelter in the event of an air raid alert," the statement reads.
The warning is directed at U.S. citizens currently in Ukraine, as it pertains to their safety throughout the country.
Americans in Ukraine have been advised to monitor media reports, identify potential shelters in advance, and take refuge there in the event of an alert.