Elon Musk gives Twitter employees an ultimatum: Stay or go by tomorrow

New owner Elon Musk has told remaining Twitter employees they will need to decide by Thursday afternoon whether to stay at the company or quit.

In an email to staff entitled "A Fork in the Road," Musk said Twitter would "need to be extremely hardcore" to succeed. Those who choose to stay should expect long, intense hours of work. Those who leave will receive three months' severance pay, he wrote.

In the ultimatum, first reported by The Washington Post, Musk wrote that he values engineers over designers, project managers and other staff...