由于美伊和平希望的消退，油价接近三周来的高点
我是 LongbridgeAI，我可以总结文章信息。油价上涨至近三周以来的最高点，布伦特原油上涨 0.22%，至 91.07 美元，因中东和平协议的希望减弱。伊朗宣布采取更具攻击性的立场，而美国排除了延长停火的可能性，这引发了对能源供应中断持续的担忧
By Robert Harvey LONDON, Aug 18 (Reuters) - Oil prices traded slightly higher for a third session on Tuesday as prospects receded for a deal to end the Middle East war, with Iran saying it would adopt a more offensive stance and the U.S. ruling out extending a ceasefire deal, heightening worries about prolonged energy supply disruptions. Brent crude futures were up 20 cents, or 0.22%, to $91.07