More than 3 million Iranians have been displaced so far since the war started, setting up a potential migration crisis

After bombs exploded near her home in the eastern Iranian city of Golestan, hairdresser Merve Pourkaz decided to leave.

Pourkaz, 32, said she traveled nearly 1,500 kilometers (932 miles) to an alpine border crossing in the hopes of reaching the safety of the nearby Turkish city of Van.

“If they let me, I will stay in Van until the war ends,” she told The Associated Press recently while waiting at the crossing. “If the war doesn’t end, maybe I’ll go back and die.”

Pourkaz...