Oil prices held steady on Tuesday as market participants weighed the possibility of a de-escalation in U.S.-Iran tensions, with a firmer dollar limiting the upside. Brent crude futures were up 6 cents, or 0.1%, at $66.36 per barrel at 0102 GMT. U.S. West Texas Intermediate crude was at $62.24 per barrel, up 0.2%. Oil prices fell more than 4% on Monday after U.S. President Donald Trump said I