Questione giuridica chiave
Whether the request to supplement the federal appeal brief had to be granted under Art. 43 BGG
Decisione estratta
No. Art. 43 BGG applies only cumulatively where the case concerns international mutual assistance in criminal matters and the case is unusually extensive or difficult.
Motivazione estratta
The appeal did not concern international mutual assistance, so supplementation was unavailable from the outset.