Oil becomes more expensive Oil prices have risen amid signs that the US may renew military strikes in Iran, which will negatively affect the flow of energy. Global Brent crude rose 12% in October, hitting a six-month high, amid the protracted conflict. The price increase occurred despite the resumption of supplies from the Middle East. A senior commander briefed President Donald Trump on military options on Thursday, the Wall Street Journal reported. Trump has repeatedly signaled that he may resume airstrikes on Tehran after next week's midterm elections. In Iran, one of the country's main negotiators, the Speaker of the Parliament, Mohammad Bajar Halibaf, said that the Islamic Republic's position regarding the end of the war would not be favorable. His statements followed confirmation from Tehran that officials had received a letter from US Vice President J. Dee Vance. Iran also said three tankers hit mines while trying to exit the Omoz Strait via an unauthorized route. The Iranian navy said the tankers turned off their radar and navigation systems and ignored warnings as they tried to exit through a prohibited route. Pegaz CEO Val Soan said the current oil prices no longer look temporary as global supplies have been severely depleted.