“Vice defense ministers of the three nations will sign the trilateral deal on Monday to share their intelligence on North Korea's nuclear and missile threats," a South Korean Defense Ministry official said, as quoted by Yonhap.
The country has recently improved the quality of nuclear warheads and currently possesses long-range ballistic missiles. North Korea has been conducting nuclear tests since 2006, the most recent one took place in February 2013. In 2014 the country launched more than 100 missiles including mid-range Rodong, according to Yonhap.
"The arrangement does not mean sharing military secrets in a broad fashion," said the official. "Rather than directly sharing the sensitive information with Japan, we will give our intelligence first to the US and the tips will then be shared with Japan upon our approval, and vice versa," the South Korean Defense Ministry official said, as quoted by Yonhap.