Oil, diesel and gas fell sharply in price after hopeful reports about progress in the negotiations between the US and Iran over ending the war. Diesel is at its lowest point in thirteen weeks and oil recorded its lowest level in five weeks yesterday. Prices remain much higher than before the war in Iran. Optimism also needs to be tempered. An agreement is still extremely uncertain, yesterday and today there were attacks back and forth and oil and gas prices are on the rise again.