Oil markets were firm on Friday, supported by OPEC-led supply cuts which are tightening the market as well as by strong demand, but analysts cautioned that the cuts would need to be extended to counter rising U.S. output. Brent futures LCOc1 were at $60.75 per barrel at 0739 GMT, up 13 cents, or 0.2 percent, from their last close. Brent has risen by around 37 percent since its low in 2017 reached last June. U.S. West Texas Intermediate (WTI) crude CLc1 was at $54.70 a barrel, up 16 cents, or 0.3 percent, from the last close. WTI is around 30 percent above its 2017-low in June. Physical oil prices are also rising. Saudi Aramco has raised […]