One of the biggest impacts of the tensions in the Middle East could be on crude oil prices. Last week, oil prices neared a six-month high on concern that Iran, the third-largest OPEC producer, might retaliate for a suspected Israeli warplane attack on Iran's embassy in Damascus. After the fears came true on the weekend, analysts feared that crude oil prices, which had settled near the $90 a barrel mark on Friday, could cross the $100 level in the next few days.