Brent Crude Oil hit a 4-year low due to ongoing market turmoil driven by reciprocal tariffs imposed by the U.S. president.The trade war is impacting market sentiment, undermining risk appetite and leading to concerns of weaker global oil demand.The OPEC+ decision to ease output quicker than expected is exacerbating concerns of oversupply in the oil market.The decline in oil prices may lead to a potential slowdown in U.S. oil production in the coming months.