Iran’s military command shut down the Strait of Hormuz on June 20, blocking all vessel traffic through the narrow waterway that connects the Persian Gulf to the open ocean. The closure, announced by the Khatam al-Anbiya Central Headquarters, was framed as a direct response to what Tehran calls violations of a ceasefire memorandum of understanding by the US and Israel.

The Strait of Hormuz handles approximately 20% of global seaborne oil trade.

A conflict that keeps escalating

The current standoff traces back to February 28, 2026, when US and Israeli military strikes triggered what has since been labeled the 2026 Iran conflict. Since late February, vessel traffic through the strait has been disrupted repeatedly, with temporary openings tied to fragile negotiations between Washington and Tehran.

Temporary reopenings occurred in April and again in mid-June, offering brief windows of relief before tensions ratcheted back up. The June 20 closure represents the latest and most emphatic shutdown, coming just days after the most recent reopening had raised cautious optimism.

In April, Iran floated a proposal that raised eyebrows across the shipping industry: transit tolls of up to $2 million per tanker. The payment options were even more interesting, with Tehran suggesting cryptocurrencies or Chinese yuan as acceptable forms of settlement, a move designed to sidestep the web of economic sanctions that has long constrained Iranian commerce.

Markets react exactly how you’d expect

Oil prices have spiked as much as 7% on previous blockade announcements during this conflict.

Bitcoin has also been along for the ride. During earlier phases of the conflict, Bitcoin surged to the $77,000 to $78,000 range following strait reopening announcements.

What this means for crypto investors

The more interesting development is Iran’s April proposal to accept cryptocurrency as payment for transit tolls. If that concept gains any traction, even hypothetically, it represents a meaningful expansion of crypto’s role in sovereign-level transactions.

For traders watching this situation, the key variable is whether the current closure holds or follows the pattern of previous shutdowns that ended in temporary reopenings. Each reopening has correlated with Bitcoin price rallies, while closures have introduced downward pressure amid broader risk-off sentiment.