NEW : Founder of Soviet boycott movement welcomes Hawking 's decision . Physicist Twitter decides to pull out of a high-profile conference in Hawking . Stephen Hawking 's move prompts fierce reaction on Hawking , including accusations of anti-Semitism . Cambridge University initially said Hawking 's poor health was the reason he was no longer attending , according to local media reports . Conference organizer says academic boycott against Israel is `` outrageous and improper ''
NEW : Founder of Soviet boycott movement welcomes Hawking 's decision . Physicist Twitter decides to pull out of a high-profile conference in Hawking . Stephen Hawking 's move prompts fierce reaction on Hawking , including accusations of anti-Semitism . Conference organizer says academic boycott against Israel is `` outrageous and improper ''