  The ambiguities in the definition of collaboration (in cases of collaboration, forced collaboration, pseudo-compliance, clandestine resistance, etc.) resulted in similar difficulties in the lustration purge, whose terms were defined in the EinigVrt (the Treaty of Unification) (Blankenburg 1995). West German civil servants and lawyers largely conducted the purge and the construction of new institutions in East Germany. East German lawyers were both unfamiliar with the new legal system and suspect in the eyes of the new authorities. The non-indigenous nature of the process was a major problem both in fact and public perception. The scope of the lustration and the system's ability to delineate individual responsibility for the Communist regime's repression were both criticized (Blankenburg 1995).