Gold edged higher as traders weighed geopolitical tensions in the Middle East and the impact of US tariffs on global trade. Bullion traded near $5,200 an ounce, having gained nearly 6% over the last six sessions, as a buildup of US troops in the Middle East kept global markets on edge. Washington and Iran started a third round of nuclear talks on Thursday, and President Donald Trump has given the Islamic Republic a deadline of March 1-6 to strike a deal, threatening military action if it fails to do so. {chart} Meanwhile, the Trump administration pushed ahead with moves to preserve his tariff agenda, adding tension ... (full story)