UPDATE 4-Oil prices hit 2019 highs amid supply cuts, trade talk hopes

*Rising U.S. output could undermine OPEC efforts. SINGAPORE, Feb 18- Oil prices on Monday hit their highest levels since November last year, lifted by OPEC- led supply cuts, U.S. sanctions on Iran and Venezuela, and hopes that the Sino-U.S. trade dispute may soon end. International Brent crude futures were at $66.66 per barrel at 0746 GMT, up 41 cents, or 0.6 percent, from...