Iran de facto closes the Strait of Hormuz: ceasefire collapses, markets in shock
June 20, 2026. The Khatam al-Anbiya Central Command—the highest joint headquarters of Iran's armed forces—announced the immediate closure of the Strait of Hormuz to commercial shipping. The formal pretext cited violations by the United States and Israel of the Islamabad Memorandum, which was signed just three days ago.
Essence of the Statement and Context
The Iranian command described this decision as a "first step" and warned of further actions if "aggression" continues. This refers to the resumption of hostilities in the region, which began after strikes by the United States and Israel in late February 2026. Previously, Tehran had imposed restrictions on vessel passage, but after the signing of the 14-point memorandum in Islamabad on June 17, the situation began to thaw: shipping was recovering, and energy prices were declining. Now, the fragile truce has been effectively annulled.
Why This Is Critical for the Global Economy
The Strait of Hormuz is the artery of global energy supply. Approximately 21 million barrels of oil and petroleum products pass through it daily, accounting for about 20% of global oil consumption and roughly a quarter of all seaborne oil trade (data from the U.S. Energy Information Administration). Additionally, major exports of liquefied natural gas from Qatar and the UAE transit through the strait. There are virtually no alternative routes for Gulf countries.
Any blockade of this channel instantly triggers a surge in energy prices and increases volatility across all markets—from commodities to cryptocurrencies. This is exactly what we observed in late February, when oil jumped more than 15% in a single day after the initial strikes.
Violation of the Memorandum or Escalation?
The Islamabad Memorandum stipulated that Iran would ensure free passage for commercial vessels during the first 60 days, while the United States would lift the naval blockade of Iranian ports. However, Tehran claims that Israel continues operations in Lebanon, which is interpreted as a violation of the agreement. Notably, U.S. officials, including Vice President JD Vance, have not yet confirmed the closure of the strait and indicate the opposite.
Nevertheless, markets have already reacted: Brent crude oil futures surged 8% in Asian trading, while Bitcoin, which had previously been rising amid declining geopolitical risks, corrected by 3.5%.
My Analysis: The situation is extremely dangerous. If the closure of the strait is confirmed—and I am inclined to believe this is not a bluff but a show of force ahead of tougher negotiations—we will see a repeat of the February 2026 scenario with a prolonged supply shock. For the crypto market, this means a sharp increase in correlation with oil and a flight to stablecoins and safe-haven assets. Investors should prepare for high volatility over the next 48 hours.