US Secretary of State Marco Rubio said a deal to end the war with Iran could materialise on Monday, as President Donald Trump tempered expectations.The United States and Iran have observed a ceasefire since April 8 while mediators push for a negotiated settlement, although Iran has imposed controls on Gulf shipping and the US has blockaded Iran's ports."We thought we might have some news last night, maybe today, I wouldn't read too much into it," Rubio said in New Delhi, referring to the potential agreement.

US Secretary of State Marco Rubio says a diplomatic solution would become unfeasible if Iran pushes through with plans to impose tolls in the Strait of Hormuz

U.S. Secretary of State Marco Rubio says there's been "slight progress" in talks with Iran, amid uncertainty about a potential deal or renewed conflict.