London Brent crude oil futures price once hit a high of $ 139. 13 per barrel today, and the US WTI crude oil futures price once exceeded $ 130 per barrel, both hitting new highs since 2008. At the same time, the soaring international oil price has caused the average domestic gasoline price in the United States to break through the integer mark of $4 per gallon. Some people in the industry are worried that imposing sanctions on Russian energy exports may cause international oil prices to soar to $200 a barrel. In Europe, the main trading indicator of natural gas-Dutch TTF natural gas futures price has also increased by nearly 80% in the past month.