Asian stock markets were weaker on Tuesday, AP reported. Tokyo's Nikkei 225 finished nearly flat at 19,677.85 and South Korea's Kospi dropped 0.4 percent to 2,343.68. Australia's S&P/ASX 200 added 0.2 percent to 5,717.90. Markets in Singapore, the Philippines, Indonesia and New Zealand were lower. Benchmark U.S. crude lost 10 cents to $49.70 per barrel in electronic trading on the New York Mercantile Exchange. The contract rose 90 cents to settle at $49.80 a barrel on Monday. Brent crude, the international standard, fell 37 cents to $52.26 a barrel in London. The dollar fell to 111.03 yen from 111.26. The euro dipped to $1.1137 from $1.1163.