The exchange price of oil rose again today and traded on the stock exchanges in the range between $111 and $116.5 per barrel. The increase occurred against the background of a Reuters report according to which Iran rejected Qatar's mediation offers and ruled out the possibility of concessions on the nuclear program. Earlier, during the last week, a drop in oil prices occurred after the arrival of a delegation from Pakistan (by 5.5%) and a delegation from Qatar (by 2.5%) to Tehran.