How can society best be protected, when increasing numbers of citizens are found outside the borders of the state? What are the limits to care - in theory as well as in practical policy? With over 1.2 billion tourists crossing borders every day and more than 230 million expatriates, questions over the sort of duty states have for citizens abroad are politically pressing. Contributors explore both theoretical topics and empirical case studies, examining issues such as as how to care for citizens who become embroiled in political or humanitarian crises while travelling, and exploring what rights and duties states should acknowledge toward nationals who have opted to take up arms for terrorist organizations.
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