One of my readers called my attention to the fact that I misread the date of the Hungarian Ministry of Administration and Justice’s letter to the Azeri Ministry of Justice. It was sent not on June 8 but on August 6. Thus the chronology is somewhat altered.
At the end of June, Viktor Orbán most likely gave the final OK to the transfer of Ramil Safarov to Azerbaijan and sent Péter Szijjártó to hammer out some of the details on July 23-24.
When Szijjártó returned to Budapest, a decision was made that the Hungarian government needed written assurance that the Azeris would follow the stipulations of the Strasbourg Convention on the Transfer of Sentenced Persons. Thus the ministry dispatched a request for such an assurance on August 8. The deal was sealed on August 15 when the Hungarians received an answer to this letter from Baku.