NEW YORK (Reuters) - Oil prices fell about 1% on Tuesday, surrendering some of the gains of recent days as investors reconsidered the likelihood of immediate supply disruptions in the Middle East after the United States killed a top Iranian military commander last week. Brent crude was down 71 cents, or 1%, at $68.20 a barrel. U.S. West Texas Intermediate (WTI) crude fell 67 cents, or 1.1%, to $62.60 a barrel.Prices surged during the previous two sessions, with Brent reaching its highest since..