New Delhi, Aug. 13 -- Iran and the United States remain deadlocked over efforts to end their months-long conflict in the Gulf, with Tehran saying there has been no progress toward reviving an interim agreement reached in June or setting a timeline for implementing its commitments.

The standoff comes as Iran signals a tougher military posture and tensions continue around the strategically vital Strait of Hormuz, raising fresh doubts over prospects for a lasting peace.

Mohammad Reza Naqdi, an adviser to the commander of Iran's Islamic Revolutionary Guard Corps (IRGC), said Tehran was moving toward an "offensive doctrine" following a series of senior military appointments by Supreme Leader Mojtaba Khamenei.

Speaking on Iranian state telev...