North Korea have fired four missiles this week so far

South Korea, Japan, and the U.S. conducted their first anti-submarine drills in five years. US Vice President Kamala Harris visited South Korea on Thursday. Harry Harris visited South Korea. Advertisement North Korea launched two ballistic missiles early Saturday morning, the South Korean military reported, marking the fourth such launch by the nuclear-armed nation this week, as Seoul, Tokyo, and Washington intensify cooperative military exercises to challenge Pyongyang. South Korea, Japan, and the United States conducted their first anti-submarine drills in five years on Friday, only days after the navies of the United States and South Korea conducted large-scale maneuvers in…