Editing Khosrow I (section)

===Negotiations with the Byzantines over the adoption of Khosrow===
[[File:Solidus of Justin I (obverse).jpg|thumb|upright|[[Solidus (coin)|Solidus]] of the [[Byzantine Empire|Byzantine]] emperor [[Justin I]].]]
In {{circa|520}}, Kavad, in order to secure the succession of Khosrow, whose position was threatened by rival brothers and the Mazdakite sect, proposed that Emperor [[Justin I]] adopt him. The proposal was initially greeted with enthusiasm by the Byzantine Emperor and his nephew, [[Justinian]], but Justin's ''[[quaestor sacri palatii|quaestor]]'', Proclus, opposed the move, due to the concern of Khosrow possibly later try to take over the Byzantine throne.{{sfn|Schindel|2013a|pp=136–141}} The Byzantines instead made a counter-proposal to adopt Khosrow not as a Roman, but a barbarian.<ref name="PRO11">Procopius, [http://www.gutenberg.org/files/16764/16764-h/16764-h.htm 11].</ref> In the end the negotiations did not come to a consensus.{{sfn|Schindel|2013a|pp=136–141}} Khosrow reportedly felt insulted by the Byzantines, and his attitude towards them deteriorated.{{sfn|Schindel|2013a|pp=136–141}}

Mahbod, who had along with [[Siyawush]] acted as the diplomats of the negotiations, accused the latter of purposely sabotaging the negotiations.<ref name="PRO11"/> Further accusations were made towards Siyawush, which included the reverence of new deities and having his dead wife buried, which was a violation of Iranian laws.{{sfn|Schindel|2013a|pp=136–141}} Siyawush was thus most likely a Mazdakite, the religious sect that Kavad originally supported but now had withdrawn his support from. Although Siyawush was a close friend of Kavad and had helped him escape from imprisonment, the latter did not try to prevent his execution, seemingly with the purpose of restricting Siyawush's immense authority as the head of the Sasanian army, a post which was disliked by the other nobles.{{sfn|Schindel|2013a|pp=136–141}} Siyawush was executed, and his office was abolished.{{sfn|Sundermann|1986|p=662}} Despite the breakdown of the negotiations, it was not until 530 that full-scale warfare on the main eastern frontier broke out. In the intervening years, the two sides preferred to wage war by proxy, through [[Arabs|Arab]] allies in the south and Huns in the north.{{sfn|Greatrex|Lieu|2002|pp=81–82}}