The US removed Oman from its mediation role in Iran negotiations, accusing the Gulf state of duplicitous conduct that mirrored acting as Iranian employees.

The US removed Oman from its mediation role in Iran negotiations, accusing the Gulf state of duplicitous conduct that mirrored acting as Iranian employees.

When US President Donald Trump first announced a deal with Iran, he named nearly half-a-dozen countries that approved the agreement, including all the Gulf states save one: former…