The results are "alarmingly low" and reveal "drastically less confidence" compared to one year ago, said the president of the group that ran the survey.
There are no known procedures to neutralize the effects of jet fuel exposure, and there's no clinical guidance for long-term treatment, researchers found.
Starmer initially rejected a U.S. request to use British bases for strikes on Iran, saying he needed to be satisfied that any military action was legal.