Brussels, Aug. 14 -- Transit through the Strait of Hormuz appeared to have come to a near standstill on Friday after two more ships were attacked in the strategic waterway and the US said it could maintain its naval blockade of Iran indefinitely.

A senior Iranian source said on Wednesday that there had been no progress in talks aimed at building on a June agreement to end the war. Since the ceasefire under that agreement broke down, Iran has resumed attacks on vessels it accuses of attempting to cross the strait without its permission.

The Abu Dhabi National Oil Company said two of its vessels were attacked while transiting the Strait of Hormuz on Thursday evening. The UAE government blamed Iran for the attacks, although Tehran made no im...