South Korea's foreign exchange reserves surpassed 402-billion U.S. dollars in July... in a boost to the country's financial stability.<br /> The Bank of Korea said Friday the country's reserves added nearly 2-point-2-billion dollars from the month before.<br />The central bank said the surge was largely due to the weaker U.S. dollar, which in turn raised the value of the BOK's assets held in other currencies.<br />It was in June that reserves surpassed the 400-billion-dollar mark for the first time. <br />