War has a major influence on global oil prices because it creates uncertainty in energy markets and threatens supply chains. Conflicts in oil-producing regions often cause investors to fear shortages, leading to rapid increases in crude oil prices. A possible war between Iran and United States could strongly affect the global economy because Iran controls part of the strategic Strait of Hormuz, a key route for world oil exports. Any military tension, sanctions, or disruption in this region could reduce oil supply and increase transportation risks. As a result, fuel prices, inflation, and production costs may rise worldwide, affecting industries, trade, and economic stability across many countries.

