TEHRAN, Iran (AP) — Militants disguised as soldiers opened fire Saturday on an annual Iranian military parade in the country's oil-rich southwest, killing at least 25 people and wounding over 60 in the deadliest terror attack to strike the country in nearly a decade.

Women and children scattered along with once-marching Revolutionary Guard soldiers as heavy gunfire rang out at the parade in Ahvaz, the chaos captured live on state television.

The region's Arab separatists, once only known for nighttime attacks on unguarded oil pipelines, claimed responsibility for the brazen assault.

Iranian Fo...