Kian Sharifi, a BBC journalist focused on Iranian politics and social media, tweeted on Wednesday several photographs of Humvees and other military vehicles on a highway connecting the central city of Semnan to the city of Garmsar, southeast of the capital Tehran. Sharifi said the photos came from an Iranian Telegram channel, which speculated the vehicles were either sold by the Taliban to Iran, or were taken from Afghan soldiers fleeing the country after the group took over most of the country, including the capital, Kabul, last month.