Multiple high-authority and highly relevant reports from credible outlets consistently reference direct Iranian threats to close or block the Strait of Hormuz. These accounts are reinforced by descriptions of live-fire naval drills in the strait, public statements suggesting escalation in response to US or Israeli military actions, and historical patterns of similar threats from Tehran. News narratives mention explicit references to blockade threats, with some citing Iran's Revolutionary Guard and leadership comments. Although a few pieces focus on analysis rather than primary threat issuance, the overall evidence is strong, converging on the likelihood that Iranian officials have indeed issued such a threat recently. No significant contradictory evidence is present, and the advisory mentions in multiple news reports corroborate this claim. The high authority of outlets like Financial Times, Reuters, Times of Israel, and recognized think tanks, combined with direct references to the threat, supports a high confidence in the statement's truthfulness.