> Samuel Woolley, an information warfare expert who was director of Oxford University’s Computational Propaganda Research Team, questioned the timing of the dir

> Samuel Woolley, an information warfare expert who was director of Oxford University’s Computational Propaganda Research Team, questioned the timing of the directives, saying they came after he and associates had repeatedly warned Twitter officials that the existing deletion policy already was undermining their efforts — and those of many other researchers — to determine the extent of Russia’s attempts to manipulate the social media platform. So next time get a subpoena?