North Korea has launched yet another ballistic missile, this time on New Year's Day, prompting a response from South Korea. The missile was fired from the Yongseong area of Pyongyang and landed in the East Sea, also known as the Sea of Japan, according to the South Korean military. The launch marks the second missile fired in two days, and is part of a record-breaking blitz of launches that began last year. No details were given about the flight of the missile. In response, South Korea's Joint Chiefs of Staff said it was closely monitoring the situation and warned that it would take "necessary measures" to ensure the safety of its citizens. The launch comes as tensions continue to rise between North Korea and its neighbors. The United States has condemned the North's missile launches and called on Pyongyang to return to the negotiating table. North Korea has yet to comment on the launch.