F-35 fighter which the military authorities mull introducing has been blamed for more than 700 confirmed performance errors and security issues over the past decade, the organization said.

It accused the Defense Ministry of working hard to introduce it under the pretext of "concern over the gap of force", a serious threat to peace on the Korean peninsula.

The military authorities are also covering up or downplaying the case of the interference in the "presidential" election and the death of a private first class, it noted, demanding Kim Kwan Jin resign at an early date as he is chiefly to blame for the cases.