The signers, representing some 40 government agencies, reflect growing internal dissent over the administration’s support of Israel’s military campaign in Gaza.
The messages urge the Biden administration to press Israel for a cease-fire, according to U.S. officials. Two were said to have been sent in the first week of the war.
Battling Hamas fighters, Israeli forces are “closing in” on hospitals where thousands of people are stranded, while the chief U.S. diplomat says “far too many Palestinians have been killed.”