Lithium investors just got a reminder that geopolitics can move markets faster than demand forecasts. After a months-long retail-fueled rally, Lithium Americas Corp. (NYSE:LAC) has plunged 45% over the past month — a collapse JPMorgan's Bill Peterson partly attributes to "shifting rhetoric from the Trump administration regarding US-China relations" and China's move to lift export restrictions on key minerals.When A Truce Turns Into A ShockChina's decision to relax curbs on rare earths, gallium, graphite, an ...