Where does the follwing information come from?
"For nine millenia, they were regarded by potential foes as having the greatest innately strategic minds in the galaxy. Because of this perception, no one has tested the Zakdorn in combat, prompting Worf to dismissively note that "the reputation means nothing." As a people, the Zakdorn were generally replete with self-assuredness and overconfidence. They were members of the United Federation of Planets by the 2360s."