New york: Oil prices slid 1% on Monday, with the US and Iran headed for a third round of nuclear talks, creating uncertainty for global growth and fuel demand amid a new round of US tariff hikes. Brent crude futures fell by 75 cents, or 1.05%, to reach $71.01 a barrel, while US West Texas Intermediate crude futures dropped 74 cents, or 1.11%, to settle at $65.74 a barrel. According to Qatar News Agency, the drop in oil prices comes as US President Donald Trump announced an increase in a temporary tariff from 10% to 15% on US imports from all countries. This decision follows the US Supreme Court's nullification of his previous tariff programme, which has added to the global economic uncertainties influencing the energy markets. The ongoing negotiations between the US and Iran have contributed to the volatility in oil prices. The talks aim to address nuclear proliferation concerns and could have significant implications for the global oil supply, depending on the outcomes of these discussions. As these geopol itical and economic developments unfold, they continue to weigh heavily on investor sentiment and market stability.