A bus crash in northwestern Afghanistan killed at least 79 people returning from Iran, including 19 children, an official said.

Nearly 80 Afghan nationals, including more than a dozen children, died in a fiery bus crash on its way out of Iran to Afghanistan in Iran's ongoing push to rid millions of foreigners.

More than 1.5 million Afghans have returned from Iran and Pakistan this year alone, according to the United Nations migration agency, as both countries step up deportations after decades of hosting A...