Editing Tiberius (section)

=== Final years ===
The affair of Sejanus and the final years of treason trials permanently damaged Tiberius's image and reputation. After Sejanus's fall, Tiberius's withdrawal from Rome was complete; the empire continued to run under the inertia of the bureaucracy established by Augustus, rather than through the leadership of the ''Princeps''. [[Suetonius]] records that he became [[paranoia|paranoid]],{{sfn|Suetonius, ''Tiberius''|loc=60, 62–64}} and spent a great deal of time brooding over the death of his son. During this period there was a short invasion by [[Parthia]], and incursions on Roman territories by [[Dacia]]n and Germanic tribes.{{sfn|Suetonius, ''Tiberius''|loc=41}}

Little was done to plan or secure Tiberius's [[Order of succession|succession]]. The Julians and their supporters were diminished in numbers and political influence, thanks to Sejanus, and Tiberius's immediate heirs were dead. [[Caligula]], the sole surviving son of Germanicus, or Tiberius's own grandson, [[Tiberius Gemellus]], were possibly candidates.{{sfn|Tacitus, ''Annales''|loc=[[s:The Annals (Tacitus)/Book 6#46|VI.46]]}} However, Tiberius only made a half-hearted attempt at the end of his life to make Caligula a [[quaestor]], and thus give him some credibility as a possible successor, while Gemellus himself was still only a teenager and thus completely unsuitable for some years to come.{{sfn|Cassius Dio|loc=[https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Cassius_Dio/57*.html#23 LVII.23]}}