At least five have declined to participate, the latest sign that the national 250th birthday celebration has become a fragmented and partisan affair as the president seeks his imprint.
Extra officers from the UK are being deployed to Northern Ireland following another night of violent unrest over an alleged stabbing attack by an immigrant suspect.
In addition to concerns about their safety in the event of another all-out war, many Iranians worry about the country’s economy further collapsing if the conflict remains in limbo.
Earlier reviews had cast doubt on the idea that a foreign adversary was behind Havana syndrome, a range of symptoms that American spies and diplomats reported.