This conclusion briefly summarises the argument of the book before considering its implications for two connected questions: the 'nature' or 'essence' of statehood under international law and the principle of state continuity. In relation to the latter, it advances a tentative additional principle for political membership that might be taken to explain the presumption of continuity as it applies to contemporary states. It also considers, albeit briefly, the current position of small island states, many of which are at risk of losing their inhabitable land due to human-caused climate change. As regards the nature or essence of statehood, the conclusion takes a somewhat sceptical view of attempts to characterise states in relation to one or more discrete concepts, arguing that not even statehood as political community should be viewed as an exhaustive account of what states 'really' are.