Trump Threatens Canada Over Wildfire Smoke as Global Markets Roil

President Donald Trump confirmed Sunday that he has decided on a "punishment" for Canada over wildfire smoke drifting into the United States, telling reporters, "You'll find out about it soon." The threat escalates a bizarre new front in bilateral relations, linking environmental cross-border issues to potential retaliation. For Canadian officials, this adds another unpredictable variable to an already complex trade and diplomatic landscape, especially as the two countries...