Washington, Sep 11, Sept. 11 -- Global oil prices have remained above $100 a barrel as escalating tensions in the Middle East threaten major energy and shipping routes, raising concerns over inflation and the wider global economy. Brent crude was trading above the $100 mark on Friday amid concerns over disruptions around key maritime routes in the region. Markets have been closely monitoring developments involving Iran and Iran aligned Houthi forces in Yemen, particularly the security of shipping routes in and around the Red Sea. The rise in energy prices has also affected financial markets, with investors assessing the possible economic impact of prolonged disruptions to energy supplies. Higher oil prices could put additional pressure on...