Iran vows to block 'illegal' shipping routes in Strait of Hormuz

An adviser to Iran's Revolutionary Guards commander said Wednesday that shipping lanes deemed illegal by Tehran will be shut down in the strategic waterway, according to state media reports. The official was referring to the southern corridor that runs along Oman's coast, which has become a focal point of regional maritime tensions.

The announcement underscores escalating Iranian efforts to exert greater control over one of the world's most critical chokepoints for global energy supplies. The Strait of Hormuz handles roughly one-third of seaborne traded oil, making it essential to international commerce and regional stability.

Iran has repeatedly sought to assert sovereignty over shipping lanes through the waterway, citing security and regulatory concerns. The nation has previously conducted naval exercises and interdicted vessels transiting the region, citing violations of its maritime boundaries.

The move comes amid broader geopolitical tensions in the Persian Gulf and could have significant implications for shipping companies and oil markets dependent on unimpeded passage through the strait. Neighbouring countries and international maritime authorities typically recognise established international shipping corridors in the waterway.