Mumbai, Feb. 25 -- COMEX gold and silver futures shot up in early Asian trades tracking weakness in dollar overseas and ongoing geopolitical uncertainty. Geopolitical risks continue ahead of the third round of US-Iran nuclear talks, scheduled on Thursday, amid a buildup of American forces in the Middle East. Meanwhile, the US, on Tuesday, moved ahead with a 10% tariff on all non-exempt goods, as initially announced by Trump on Friday after the Supreme Court verdict against his sweeping tariffs. Trump, however, pledged to raise duties to 15%, fueling worries about retaliatory measures and the potential economic fallout from disruptions to global supply chains. The counter is currently quoting at $5204.60 an ounce, up almost half a percent on...