Firstly, the author analyses the theory of sovereignty from the point of its birth and then he considers more recent theoretical challenges facing the notion of sovereignty in a globalised world. Particular attention is paid to soft law – that new, formally non-binding source of international law in the light of its factual influence on the desovereignisation of states. The author holds the position that the relativisation of the notion of sovereignty has been a process that began already in the 18th century and that has only additionally accelerated with new challenges posed by globalisation. The author argues for the only possible and proper use of the notion of sovereignty in its original meaning as an absolute, completely unlimited, and...