Iranian oil tankers began repositioning through the Strait of Hormuz on Tuesday, the first significant shipping activity in the critical waterway since the US naval blockade choked off Iranian exports earlier this year. The movement comes days before a formal US-Iran agreement is set to be signed in Geneva on June 19.
President Donald Trump announced the development on June 15 via Truth Social, declaring the southern navigation route safe for transit. Iranian officials confirmed the blockade has been lifted in anticipation of the deal, with vessels including oil tankers already crossing the strait.
From blockade to breakthrough
The US-Iran conflict kicked off on February 28, 2026, and the subsequent naval blockade did exactly what blockades do. Iranian oil exports plummeted by over 90% in May 2026, effectively strangling one of OPEC’s key producers.
Roughly 20% of global oil trade transits through the Strait of Hormuz. The memorandum of understanding between Washington and Tehran, aimed at ending the broader Middle East conflict, appears to be unwinding those pressures. Oil futures have already responded, declining to multi-week lows as traders price in the reduced risk of supply disruption. Stock futures, meanwhile, have climbed on the optimism.
