South Korean stocks closed lower Tuesday as investors booked profit ahead of the US Federal Reserve's policy meeting later this week. The Korean won rose against the US dollar. The benchmark Korea Composite Stock Price Index shed 1.84 points, or 0.07 percent, to close at 2,498.81, ending its three consecutive session advance. Trade volume was moderate at 476.1 million shares worth 8.63 trillion won ($6.49 billio...