North Korea fired four ballistic missiles into the sea off Japan's northwest coast early on Monday, South Korean and Japanese officials said, days after the reclusive state promised retaliation over U.S.-South Korea military drills it sees as a preparation for war.
South Korea's military said the missiles were unlikely to have been intercontinental ballistic missiles (ICBM) which could reach the United States, but flew on average 1,000 km (600 miles) and reached a height of 260 km (160 miles).
Some of the missiles landed in waters as close as 300 km (190 miles) to Japan's northwest coast, Japan's Defence Minister Tomomi Inada said in Tokyo.
