International stocks trading in New York closed lower on Monday. The S&P/BNY Mellon index of American depositary receipts fell 1.1% to 166.40. The European index declined 0.5% to 146.83. The Asian index fell 1.8% to 222.79. The Latin American index dropped 1.6% to 208.49. And the emerging-markets index was down 1.9% at 373.35. China Finance Online Co. and BHP Group Ltd. were among the companies whose ADRs traded actively. BHP Group Ltd. said it is considering selling its oil-and-gas business in what would rank as one of the energy industry's biggest deals this year: Analysts estimate the unit could be...