Iran will no longer turn a blind eye to "maritime offences" in the Gulf, its foreign minister said on Monday, a day after it seized an Iraqi oil tanker there that it accused of smuggling fuel.
Iranian Foreign Minister Mohammad Javad Zarif, who was the lead negotiator in the 2015 nuclear deal has abruptly tendered his resignation on Instagram, although there was no sign President Hassan Rouhani had yet accepted his decision.
Iranian Foreign Minister Mohammad Javad Zarif blamed "a foreign regime" backed by the United States for Saturday's attack on a military parade which killed at least eight troops and several civilians.
British foreign minister Boris Johnson arrived on Saturday in Iran, where he is expected to lobby his Iranian counterpart Mohammad Javad Zarif for the release of jailed Iranian-British aid worker Nazanin Zaghari-Ratcliffe.
Iran's Foreign Minister Mohammad Javad Zarif on Monday urged Qatar and neighbouring Gulf Arab countries that have severed diplomatic ties with it to engage in dialogue to resolve their dispute.