Iran threatens to go on offensive in Strait of Hormuz if diplomacy with US fails

By Parisa Hafezi DUBAI, Aug 17 (Reuters) - Iran has decided to shift its policy from defensive to "fully offensive" due to the deadlock in efforts to agree a permanent end to its war with the United States, a senior Iranian official told Reuters on Monday. Progress towards peace talks and a resumption of oil tanker traffic through the strategic Strait of Hormuz has ground to a halt, with no sign that the warring parties are moving towards ending the conflict that the U.S. and Israel launched on…