HAMILTON, Canada   The UN's political affairs chief warned Thursday that the surging global demand for critical minerals is intensifying geopolitical rivalry and destabilizing supply chains. "The surge in demand for critical minerals is also fueling geopolitical competition and affecting global supply chains," Rosemary DiCarlo told a Security Council meeting on Energy, Critical Minerals and Security. DiCarlo said the scale of the minerals economy is already vast and growing rapidly. "In 2023