Why are oil prices up now and will Brent futures and US WTI crude prices continue to rise or decline again? This question is being asked across global financial markets after oil prices moved higher following fresh developments involving the United States and Iran. Concerns over oil supply have returned as Iran announced the closure of the Strait of Hormuz, one of the world's most important energy routes. At the same time, military action between the two countries has increased. Falling US crude inventories and lower OPEC production have also added support to oil prices. Investors are now watching whether these developments will keep prices rising or lead to another decline.Oil prices increased sharply after reports of new military action involving the United States and Iran. The latest rise came after Tehran announced that the Strait of Hormuz had been closed. Brent crude futures gained $1.48, or 1.59%, reaching $94.58 per barrel. US West Texas Intermediate crude rose $1.71, or 1.90%, to $91.74 per barrel. Earlier in the trading session, US crude futures were up by more than $3.The market reacted because the Strait of Hormuz is one of the most important shipping routes for global energy supplies. Any disruption in this area creates concerns about oil availability and transportation.Iran's joint military command announced that oil tankers and commercial ships would not be allowed to pass through the strait. The announcement stated that vessels attempting to transit the route could face military action. These developments increased uncertainty and encouraged traders to buy oil contracts, pushing prices higher.Why are oil prices up now?The main reason behind the latest oil price increase is the growing risk to global supply. The United States launched additional strikes on multiple targets in Iran. The attacks marked another stage in the conflict between the two countries. The military exchange comes after a ceasefire reached in early April. That agreement had temporarily reduced concerns about a wider conflict. However, recent actions have raised fears that tensions may increase again.President Donald Trump also issued strong comments regarding future military action if an agreement with Iran is not reached. At the same time, Iran's reported closure of the Strait of Hormuz has intensified concerns about energy shipments. The waterway normally handles around one-fifth of global oil and gas shipments.Analysts believe that restrictions on this route could significantly affect global energy flows and reduce available supplies in international markets. Market participants often react quickly to any threat involving major oil-producing regions. This reaction was visible in Thursday's trading activity.Will Brent futures and US WTI crude prices continue to rise or decline again?The future direction of Brent futures and US WTI crude prices depends on several factors. One important factor is whether tensions between the United States and Iran continue to increase. If military action expands or the Strait of Hormuz remains restricted, oil prices could remain elevated. Another factor is global supply levels. The longer disruptions continue, the greater the pressure on oil-producing countries and energy markets.However, prices may decline again if diplomatic progress is made. Any agreement that restores shipping activity through the Strait of Hormuz could reduce supply concerns and ease pressure on markets. Traders will also watch production levels from major oil-producing nations and inventory data from consuming countries. As markets receive new information, price movements may remain volatile.Analysts insights and market outlookAnalysts at ING said the latest developments suggest that a resolution remains distant. According to their assessment, energy flows from the Persian Gulf are likely to stay constrained under current conditions. The renewed military escalation contributed to the early rally in oil prices.Meanwhile, the US military stated that commercial ships were still moving through the strait and that no US warships had been hit in the area. This statement followed reports from Iranian state media claiming that US vessels near the waterway had been targeted by missiles and drones.Supply concerns have also been strengthened by inventory data. The US Energy Information Administration reported that crude inventories fell by 7.2 million barrels during the week ending June 5. Total inventories dropped to 426.5 million barrels.Analysts had expected a decline of around 4 million barrels. The larger-than-expected draw suggested stronger demand or tighter supply conditions. Data also showed that US crude inventories, including strategic reserves, have fallen by 79 million barrels since the conflict involving Iran intensified on February 28.This reduction reflects efforts by the United States to offset supply disruptions caused by restrictions around the Strait of Hormuz. Additional pressure has come from lower production levels among OPEC members. A Reuters survey found that OPEC output in May fell to its lowest level in more than two decades. Lower exports from Iran and reduced shipments from Gulf producers contributed to the decline. These supply factors continue to support higher oil prices.What should investors do now?Investors should closely monitor developments involving the United States, Iran, and the Strait of Hormuz. Oil markets are being influenced by geopolitical events, inventory trends, and production levels. Any change in these factors can affect price direction. Investors should pay attention to official statements from governments, military updates, shipping activity in the Persian Gulf, and reports from energy agencies. Inventory reports and OPEC production figures will remain important indicators for future price trends.Market volatility may continue as traders react to new developments. Investors should assess risks carefully and avoid making decisions based only on short-term price movements. The next phase of oil prices will likely depend on whether tensions escalate further or whether diplomatic efforts reduce concerns about global supply disruptions.FAQsQ1: Why did oil prices rise after the latest US-Iran developments?Oil prices rose because traders feared supply disruptions after Iran announced restrictions in the Strait of Hormuz and the United States launched additional strikes, increasing uncertainty in energy markets.Q2: What factors will determine future Brent and WTI crude price movements?Future prices will depend on geopolitical tensions, shipping activity through the Strait of Hormuz, OPEC production levels, inventory data, and any diplomatic agreements affecting supply conditions.