Ahmadreza Pourdastan warns clash in the region would be a 'huge disaster,' claims Iran's rivals deterred by its military capabilities

In Australia, Esper and Pompeo suggest nations are quietly expressing support for plan; counterparts in Melbourne won't commit

In six-year first, regional rivals meet in effort to boost security cooperation, amid a spike in tensions in the Persian Gulf

Newly released radio communications show Revolutionary Guards warning British sailors on HMS Montrose not to put their 'life in danger' by interfering in capture of Stena Impero

London dispatches warship to Gulf to escort UK-flagged tankers across world's busiest oil shipping lane amid escalating tensions

Government spokesman claims his country is 'biggest agent of maritime security in the Persian Gulf,' warns fleet from Europe would carry a 'hostile message'

Top Tehran security official holds talks with Omani minister in charge of foreign affairs amid escalating tanker crisis

Meeting between foreign ministers seen as possible effort to diffuse standoff between Tehran and London, after former seized British-flagged tanker in Strait of Hormuz

Iranian president offers 'proportional response' if Britain releases seized tanker suspected of busting sanctions

FM Zarif congratulates former counterpart Boris Johnson, says Islamic Republic not backing down from standoff in oil-rich Gulf