  For each type of theory of secession, there are unanswered questions and potential objections regarding territorial justice. For example, remedial right only theories that include unjust annexations of territory among the injustices that ground a unilateral (claim-)right to secede must provide a satisfactory solution to what has elsewhere been called the moral statute of limitations problem (Buchanan 1991: 88): how durable are claims to independence based on past unjust takings—how far back in history may a group go in making the case that they are entitled to their own state because they previously had one?