Japanese cabinet secretary Hirokazu Matsuno confirmed this month that negotiations are underway between the U.S., South Korea and Japan to reach a consensus on sharing real-time data about North Korean missile launches. 

While no official agreement has been concluded, these diplomatic discussions signal an intention to fortify collaborative efforts in countering North Korea’s nuclear threats.

However, such an accord might significantly complicate South Korea’s diplomatic ties with China. It stands at risk of overstepping the parameters of two core principles from the “Three Nos” policy — a pledge made by the Moon Jae-in administration that current President Yoon Suk-yeol seems