Iran announces closure of strategic waterway
Tehran closed the Strait of Hormuz on Saturday, June 20, 2026.
The decision was announced by Iran's Khatam al-Anbiya Central Headquarters. The move directly threatens a fragile US-Iran peace arrangement reached earlier in June 2026, according to Business Today.
Justification for the closure
Iranian officials cited violations of a recently negotiated ceasefire memorandum of understanding (MoU) as justification for the action. The MoU involves the United States and Israel.
The announcement came amid allegations that Washington committed a "clear breach of trust" while Israel continued military operations, according to Business Today.
United States response
The United States downplayed reports of a complete blockade. U.S. officials stated that maritime traffic continues to move through the strait despite Iran's announcement.
American representatives also noted that diplomatic channels remain active between Washington and Tehran, according to Business Today.
Context on recent peace efforts
The closure occurs shortly after a peace arrangement was reached earlier in June 2026. The agreement aimed to stabilize tensions following months of conflict involving Iran-backed groups and Israeli forces.