There are also concerns about shipping through the Strait of Hormuz. Recently, a cargo ship linked to a French company managed to pass through safely.
However, it was one of the first such movements after attacks on ships started earlier this year.
Any disruption in shipping could affect global supply chains.
Stock markets react to oil surge
Stock markets around the world have reacted to these developments.
Asian markets had fallen earlier due to uncertainty, but Tokyo shares later recovered. Markets in Europe and the US also improved before the long holiday weekend.
Still, investors remain cautious as the situation is unclear.
Food prices and travel costs may rise
Rising oil prices also affect other sectors. According to the UN’s Food and Agriculture Organization, food prices increased by 2.4 percent in March. This is mainly due to higher fuel and fertiliser costs.
Airlines are also worried. In Japan, airlines are considering increasing fuel charges if oil prices stay high.
Countries take different steps
Different countries are trying to manage the situation in their own way.
Italy has extended tax cuts on fuel to give some relief to people. Ukraine has even offered to help keep the Strait of Hormuz open, based on its experience in the Black Sea.
In New Zealand, more people are buying electric vehicles as fuel prices rise.