The 22-year-old, who had suffered severe brain damage, was medically evacuated to the United States on June 13. He died Monday at 2:20 p.m. (1820 GMT), surrounded by relatives in his hometown of Cincinnati, Ohio.
Bickering on all sides and confusion over the process have only increased as the clock ticks down to the Oct. 17 vote, called after the Supreme Court annulled the initial August election, citing widespread irregularities.
After the US announced its new sanctions, Iran hit back, calling them "worthless" and "illegal" and announcing its own sanctions "against American people and entities that have acted against the Iranian people and other Muslim peoples of the region."
Just days before the German general election, a new report by the Oxford Internet Institute finds that the types of bots and fake accounts that played a big role in the US election are largely absent from the online political conversation in Germany.