How a chilling Saudi cyberwar ensnared Jamal Khashoggi
David Ignatius writes: When Jamal Khashoggi entered the Saudi Consulate in Istanbul on Oct. 2, he didn’t know he was walking into a killing zone. He had become the prime target in a 21st-century information war — one that involved hacking, kidnapping and ultimately murder — waged by Saudi Crown Prince Mohammed bin Salman and his courtiers against dissenters. How did a battle of ideas, triggered by Khashoggi’s outspoken journalism for The Post, become so deadly? That’s the riddle at…