U.S. officials say Iran is in advanced stages of planning attacks against Americans. The warning covers multiple locations in the Middle East.
The U.S. government has ordered diplomats and other federal employees to leave Saudi Arabia. The State Department is also drawing down staff at other missions in the region.
Officials describe the threat as serious and specific. Security at U.S. facilities has been raised in response.
The reductions affect several diplomatic posts beyond the kingdom. Families of personnel are also departing, according to officials.
Iran has not publicly responded to the warnings. The State Department declined to detail specific intelligence behind the decision.
The drawdown comes amid heightened tensions between Washington and Tehran. Officials say further measures could follow if threats persist.
Americans traveling in the region are urged to remain vigilant. The State Department advises citizens to monitor local news and follow embassy guidance.
