A temporary U.S.-Iran memorandum dated June 17, 2026 did not lead to a lasting halt in the war. Disputes over the Strait of Hormuz, Iran’s blocked assets and security commitments blocked a stable agreement. Washington may have used the deal to preserve military options and reduce Tehran’s leverage, though the source says this reading is not certain. Reciprocal attacks, disagreements over ship passage and the renewed blockade of ports deepened mistrust and raised the risk of a new war.