NEW YORK: Oil prices fell roughly two per cent on Wednesday to their lowest levels since February as optimism over US-Iran talks allayed supply concerns after US President Donald Trump said meetings in Qatar had gone well. Brent futures were down $1.69, or 2.3pc, to $71.26 a barrel at 1:41pm ET (1741 GMT). US West Texas Intermediate crude was down $1.31, or 1.88pc, at $68.19 a barrel.