Changes by the Trump administration have left US diplomats demoralized and less able to do their jobs, according to a scathing new report by the union representing foreign service officers.

The report, based on a survey of foreign service members, found that a vast majority of respondents — 98% — said morale had declined since January, and a third were considering leaving the foreign service early.

25% of the foreign service has “resigned, retired, seen their agencies dismantled, or been removed from their posts” since January, the report said, and more are considering leaving.

“The U.S. Foreign Service is being systematically undermined by its own leadership,” AFSA President John Dinkelman warned in the report, which is set to be released on Wednesday afternoon. “The Foreign Service—the very institution tasked with navigating our global interests—is being dismantled in real time.”