North Korea has fired three ballistic missiles into the sea in what appears to be a tantrum over the deployment of an advanced U.S. missile defense system in South Korea, Seoul says. South Korean authorities say the missiles were launched from a western North Korean town into the country's eastern sea, meaning the missiles flew across the country. The missiles had enough range to reach South Korea, authorities warned. The Pentagon released a statement confirming the news, adding that two of the missiles were likely Scud tactical ballistic missiles, and the third a Rodong intermediate range ballistic missile. While North Korea regularly tests short-range missiles, the latest stunt comes after the country threatened a "ruthless retaliatory strike" over the deployment in the south of the U.S. Terminal High Altitude Area Defense (THAAD) system.