Trump's power doctrine faces tests in Iran and Canada

President Donald Trump's presidency, based on the premise that US power compels global submission, faces serious tests in confrontations with Iran and Canada, where both nations have defied his demands. Iran has resisted US military pressure for six months in a conflict Trump initiated but cannot end, while Canadian Prime Minister Mark Carney halted trade talks, accusing Washington of using "economic integration as a weapon." Treasury Secretary Scott Bessent announced an "economic onslaught" against Iran, and Trump warned Canada to "fall in line." The administration's strategy risks retaliation, including energy and food price hikes, and market instability. Trump has previously backed down when economic consequences mount, raising doubts about his resolve ahead of November midterm elections.