The United States has begun enforcing a naval blockade on Iranian ports, marking a major escalation in the ongoing conflict, even as global oil prices eased on expectations of renewed diplomatic talks. The blockade, which came into effect on Monday, targets vessels linked to Iranian ports while allowing transit for ships not associated with Iran.

Shipping data indicated disruptions in maritime traffic, with some vessels turning back at the Strait of Hormuz as the blockade started. However, at least one tanker managed to pass through, signalling that limited movement is still possible under the new restrictions.

Despite the escalation, oil prices declined in Asian trading, as investors reacted positively to signs that the United States and Iran may resume talks to resolve the crisis. Brent crude fell below $100 per barrel, reflecting easing concerns over supply disruptions.

The blockade follows the collapse of weekend negotiations in Islamabad, after which Iran warned it could target ports in neighbouring Gulf countries in retaliation.

While tensions remain high, analysts note that expectations of diplomacy are helping stabilise global markets. The situation underscores the delicate balance between military escalation and ongoing efforts to prevent a broader regional conflict.