Seoul says it believes Seoul fired three short-range missiles nearly a month . Short-range missile tests are common and cause less concern than longer-range ones . The tests come earlier this week after the death of the North Korean leader Kim Jong Il . His youngest son and designated successor , Kim Jong Il , has become the new leader .
Seoul says it believes North Korea fired three short-range missiles earlier this week . Short-range missile tests are common and cause less concern than longer-range ones . The tests come nearly a month after the death of the North Korean leader Kim Jong Il . His youngest son and designated successor , Kim Jong Un , has become the new leader .