Brent crude futures rose 0.7% to $113.50 a barrel on Friday, a five-month high, and U.S. West Texas Intermediate crude futures rose 0.8% to $100.24 a barrel. This followed a statement from Iran's military that it had enhanced its capabilities and was fully prepared for "asymmetric warfare." U.S. President Donald Trump on Thursday accused Iran of attempting to manipulate oil markets over the Strait of Hormuz, claiming it fabricated attacks to drive up oil prices. Saudi Aramco reportedly asked employees to evacuate its headquarters and work remotely after a series of attacks by Iran-backed Houthi rebels on Saudi airports and Aramco offices.