tiberius shared in augustus' tribune powers as of 6 bc, but soon went into retirement in rhodes. he was reported as wanting no further role in politics.p117p46 after the early deaths of augustus' young grandchildren-turned-sons, lucius and gaius in ad 2 and 4 respectively, and the earlier death of his own brother drusus (9 bc), tiberius was recalled to rome in june ad 4, where he was adopted by augustus on the condition that he, in turn, adopt his nephew germanicus.p119 this continued the tradition of presenting at least two generations of heirs.