Positive signals from US-Iran negotiations, international oil prices significantly dropping

After the signal of "closer to reaching a peace agreement", international oil prices fell sharply on the same day. However, both sides subsequently played down the possibility of successfully signing the agreement in the short term. It is reported that the price of Brent crude oil fell by about 6% to around $97 per barrel that day. The price of US West Texas Intermediate crude oil also fell by about 6% to around $90 per barrel.