South Korean stocks are likely to be affected by European and U.S. policy measures next week as investors keep tabs on the European Central Bank (ECB) and the US Federal Reserve amid lingering worries over economic uncertainties, analysts said Saturday. The benchmark Korea Composite Stock Price Index (KOSPI) rose 0.34 percent from a week earlier to end at 1,829.16 this week, with the market sinking to the 1,760 level at one point.