Mistakes that led to the deaths of more than a hundred children “went beyond negligence,” investigators said. They also cited a separate strike the same day that killed a reported 22 civilians.

The conflict underscored the distance between world powers over the United States’ pressure campaign on Iran.

Billions of dollars in oil revenue are missing from Iran’s coffers. At the center of the scandal are shadowy middlemen known as "trustees" who help Tehran sell oil, steel, petrochemicals, and other goods abroad while bypassing international sanctions. But the middlemen Iran used have not all been handing over the sales revenues -- instead, many have absconded with it, to the tune of over $11 billion. Roya Maleki from RFE/RL's Negah-e-Farda (Iran Tomorrow) program explains.

The carrier, Mahan Air, said it would stop flying to neighboring countries just over a week after the United States imposed sweeping sanctions on Iran’s aviation industry.