The measures follow a Monday demand by Secretary of State Marco Rubio for the entire Iranian delegation to leave after negotiations mediated by Qatar reached a stalemate. Iran's UN mission rejected the expulsion claims, asserting the delegation's departure had been scheduled since Sept. 17. The diplomatic clash occurs as Donald Trump suggests the U.S. may increase bombing after midterm elections, while the UN warns of "radio silence" and volatility in the Strait of Hormuz.
