https://apnews.com/59049f55ee7553208084c3971ce425cd > DETROIT (AP) — Twitter has dropped a major roadblock in front of Elon Musk’s effort to take over the company, leaving investors to wonder about the mercurial Tesla CEO’s next move. > The social media company has adopted a “poison pill” defense that makes it difficult for Musk or any other investor to buy Twitter without the board of directors’ approval. Musk, who currently owns about 9% of the company, last week disclosed an offer of about $43 billion, or $54.20 per share.