A decision which does not respect jurisdictional limits may be annulled by a controlling authority. But if there is no issue as to jurisdiction, then any issue as to admissibility is an objection to the claim (for example its prematurity or – at the other extreme – its staleness) and not to the forum. It follows that determinations with respect to should ordinarily be final and non-renewable. Once it is established that the parties have consented to the jurisdiction of a particular court or tribunal, there is a powerful policy reason – given the multiplicity of for a which might otherwise come into play internationally, with incompatible outcomes – to recognize its authority to dispose conclusively of other threshold issues.