CNBC Daily Open: Trump's tariff leverage, EU warning and Iran hopes

The US Capitol in Washington, DC, US, on Wednesday, Sept. 16, 2026. Daniel Heuer | Bloomberg | Getty ImagesHello, this is Anniek Bao writing to you from Singapore. Welcome to another edition of CNBC's Daily Open.Canadian Prime Minister Mike Carney told Brussels that Canada will pick its own partners, brushing off U.S. President Donald Trump's warnings. While apparently readying for a fight with the EU and Canada, Trump sounded optimistic about the Iran war nearing its end, even as tensions on the Saudi-Houthi front escalated, a reminder that one ceasefire doesn't calm a whole region. The one place Washington's leverage is unambiguous is tariffs, where Congress just gave Trump a fresh weapon aimed at Beijing and New Delhi. What you need to know todayEuropean Parliament members gave Canadian Prime Minister Mark Carney a standing ovation Wednesday as European Commission President Ursula von der Leyen floated an "Alliance for the Future," with Canada as the bloc's first associate member. Trump dismissed the idea as "laughable" and called Canada a "terrible" trade partner, warning of heavy tariffs on Europe if the move was in bad faith. "If it's a good intention, that's fine," he said.C...