The U.S. and Iran are back to bombing every day in a bid to control the Strait of Hormuz. And neither is backing down, showing the limitations of President Donald Trump’s reliance on escalating airstrikes to bend Tehran to his will.

WASHINGTON — President Donald Trump is escalating his criticism of Canada over wildfire smoke drifting into the United States, warning that additional tariffs could be imposed if Canadian officials fail to better address the growing wildfire crisis,