U.S. Secretary of State Marco Rubio said Tuesday that Iran's leaders are "insane in the brain" and should not test President Donald Trump.

U.S. Secretary of State Marco Rubio said Tuesday that Iran's leaders are "insane in the brain" and should not test President Donald Trump.

As a spate of incidents in the Strait of Hormuz test the ceasefire, an Iranian official says, "We are just getting started".