US threatens 'economic D-Day' for Iran, while Canada retaliates against new US tariffs

The United States has threatened an 'economic D-Day' against Iran and its trading partners, preparing to impose severe sanctions aimed at ending a nearly six-month conflict that has disrupted shipping through the Strait of Hormuz. Concurrently, Canada has announced 'dollar for dollar' tariffs on some U.S. goods in retaliation for 50% levies ordered by President Donald Trump, escalating a trade dispute between the two nations.