SEOUL, South Korea (AP) — North Korea on Saturday fired about 10 ballistic missiles toward the eastern sea, South Korea’s military said, staging its own show of force as the rival South conducts a joint military exercise with the United States. South Korea’s Joint Chiefs of Staff said the missiles were fired from an area in Sunan, the site of Pyongyang’s international airport, and flew about 350 kilometers (220 miles). Japanese Defense Minister Shinjiro Koizumi said the weapons landed outside