▁individual ▁nations ▁and ▁states . ▁As ▁a ▁result , ▁K elsen ▁emphas izes ▁that ▁international ▁law ▁is ▁often ▁pr one ▁to ▁the ▁conduct ▁of ▁war ▁and ▁severe ▁diplom atic ▁measures ▁( block ade , ▁se iz ure , ▁intern ment , ▁etc .) ▁as ▁offering ▁the ▁only ▁correct ive ▁measures ▁available ▁to ▁it ▁in ▁reg ulating ▁the ▁conduct ▁between ▁nations . ▁For ▁K elsen , ▁this ▁is ▁largely ▁in ev itable ▁due ▁to ▁the ▁relative ▁primit iveness ▁of ▁international ▁law ▁in ▁contemporary ▁society . ▁ ▁VIII . ▁Inter pret ation ▁K elsen ' s ▁final ▁chapter , ▁Chapter ▁E ight , ▁de als ▁with ▁the ▁subject ▁of ▁interpretation ▁in ▁at ▁least ▁three ▁of ▁its ▁most ▁important ▁aspects . ▁First , ▁K elsen ▁discuss es ▁the ▁nature ▁and ▁method ology ▁of ▁the ▁interpretation ▁of ▁the ▁law . ▁Second , ▁he ▁discuss es ▁interpretation ▁as ▁an ▁act ▁of ▁cogn ition ▁and ▁of ▁volunt ary ▁will . ▁Third , ▁he ▁discuss es ▁interpretation ▁as ▁it ▁is ▁to ▁be ▁understood ▁as ▁part ▁of ▁the ▁science ▁of ▁law , ▁as ▁K elsen ▁has ▁defined ▁it ▁as ▁being ▁' pur ified ' ▁from ▁the ▁und ue ▁influ ences ▁of ▁politics , ▁mor als , ▁and ▁met aph ys ics . ▁ ▁Support ive ▁and ▁supp lement ary ▁comment ary ▁K elsen ▁attempted ▁to ▁re construct ▁' legal ▁science ▁( Re chts wissenschaft )' ▁as ▁a ▁' s cience ▁of ▁norm s ▁( N orm en ) ', ▁on ▁anal ogy ▁with ▁Im manuel ▁Kant ' s ▁conception ▁of ▁a