Notes that since the terrorist attacks of Sept 11 there has been considerable discussion about changes in current international relations theory - loosely described as neo-medievalism. The concept takes account of the increasing number of challenges to existing nation based IR theories including non-state violence, state disintegration, spread of modern technology, and the rise of sub and supra state identities, all of which question states' authority and legitimacy.
INTERNATIONAL RELATIONS THEORY NATION STATE TERRORISM