That,s wot i like so much about the TOS klingons always wrecking havoc with the federation and the galaxy. And it was quoted from kang,s wife that some of there worlds were poor and they needed to conquer planets and be warrior like . Sorry i forgot about other Klingons in TOS but i thought those three were legendary in the series. Many other examples on how the klingons caused havoc for starfleet and the UFP in TOS. Fridays Child for example !!!!