Oil prices turned lower on Wednesday after rising about $1 at the start of trade in Asia, with investors assessing the outlook for US-Iran peace talks following the U.S. extension of a ceasefire. Brent crude futures were down 21 cents, or 0.2%, at $98.27 a barrel at 0039 GMT, after touching $99.38 earlier in the session. West Texas Intermediate futures fell 28 cents, or 0.3%, to $89.39, after