An IRGC Navy official threatened to turn Iran's entire Gulf coastline into a killing ground if the US resumed strikes, even as negotiators reported the two sides were closer to an initial agreement than at any point since the April ceasefire.

Tehran has vowed a "far more severe" response beyond the region after overnight US strikes on missile sites and boats planting mines in southern Iran, even as both sides say…

...while Rubio signals optimism on peace deal in 'days'.