North Korea Conducts Submarine-Launched Cruise Missile Tests, South Korea Reports

South Korea's military reported that North Korea fired several cruise missiles near a major military shipyard on its eastern coast, adding to a series of recent weapons tests that are heightening tensions with the United States, South Korea, and Japan. North Korean leader Kim Jong Un's efforts to expand his arsenal of weapons, including cruise missiles and solid-fuel intermediate-range ballistic missiles, are raising concerns about the country's military capabilities and its potential to threaten neighboring countries and U.S. targets in the Pacific.