Limitedly speaking, in the relationship between Japan and North Korea, I feel something wrong with calling North Korea to be a terrorist Nation. Generally terror means what is done for political requirement or insist, and terrorists often declare the crime they have committed by themselves. In the North Korean's kidnapping case, they have long denied their involvement and have not affected Japanese policy.
They had practical necessity to have those kidnapped train their people to behave as Japanese or to speak Japanese. (Oh but surely the ultimate goal is to make use of the trainee getting terror happen in south Korea or other country in Asia and in the middle east...)
To be honest despite all the doubt I have hardly believed that one Nation like DPRK himself should commit crime as kidnapping. China, USSR and other countries have acknowleged its sovereignty. It must be a normal Nation.
I believed that as long as I am in the western courtry I can not avoid information we can access have certain bias towards the west, centered to US, in which bias the East countrie reflects something unfamiliar and strange. (And this is true to the East coutries; the west coutries reflect something unfamiliar and strange)
Thus I thought such doubt was out of such a bias.
But oh, they have committed. what a shock!
BH346, as Pacificjourney points out the sarin case was Aum Shinrikyo's crime.
(In that morning if I had left my house 30 minutes before I might be killed in the accident)
For a.net interest, JRA members hijacked JAL 727-100 in 1969 and forced the flight proceed to North Korea, where they became "refugee".