Oil prices saw a slight decline as key geopolitical factors emerged. U.S. tariff actions introduced uncertainty regarding global economic growth and fuel demand. Concurrently, anticipation of a third round of nuclear talks between the U.S. and Iran eased immediate fears of conflict.

Brent crude futures fell 0.6 percent to $71.31 a barrel, while U.S. West Texas Intermediate crude dropped by the same margin to $66.06. Last week, concerns over potential U.S.-Iran military conflict had driven prices up significantly.

Analysts noted that the U.S. Supreme Court's decision to strike down import tariffs prompted a market reaction. The U.S. Customs and Border Protection agency announced a halt to tariff collections under the International Emergency Economic Powers Act. However, President Trump indicated an intention to impose new tariffs on U.S. imports.

This tariff news contributed to a risk-averse sentiment in financial markets, impacting crude oil prices. Iran has signaled willingness to negotiate its nuclear program in exchange for sanctions relief. The ongoing geopolitical landscape, including the conflict in Ukraine and the U.S.-Iran situation, suggests continued volatility in oil markets.