North Korea fired a submarine-launched ballistic missile off its east coast, South Korea's military said on Wednesday, the latest in a string of missile launches by the isolated country in defiance of UN Security Council resolutions. The projectile landed in Japan's air defence identification zone (ADIZ), an area of control designated by countries to help maintain air security, South Korea's Yonhap News Agency reported. North Korea's "SLBM [submarine-launched ballistic missile] technology appears to have progressed," a South Korean military official told Reuters. North Korea has become further isolated after a January nuclear test, its fourth, and the launch of a long-range rocket in February brought tightened UN sanctions. The North's missile tests this year include a launch from a submarine last month that appeared to have failed, according to South Korea's military.

Source: CBC News August 23, 2016 23:09 UTC