Indonesian Siti Aisyah and Vietnamese Doan Thi Huong are escorted as they revisit KLIA2 in Sepang October 24, 2017. — Reuters pic

LOS ANGELES, Jan 29 — Nearly four years after the assassination of North Korean leader Kim Jong-un’s estranged half-brother, Kim Jong-nam, a new documentary seeks to shed light on the brazen airport murder and the involvement of the two young women accused of carrying it out.