An Army general who oversaw the US withdrawal from Afghanistan was promoted to a four-star officer after a Republican senator dropped a hold on his nomination, according to a Senate aide. The Senate on Monday confirmed Lt. Gen. Chris Donahue to be the commander of US Army Europe-Africa by unanimous consent, meaning no senator objected to his approval. Sen. Markwayne Mullin, a Republican from Oklahoma, had previously blocked the promotion, despite the Senate Armed Services Committee advancing 984 other military promotions. It was not immediately clear why Mullin dropped his hold, and CNN is reaching out to Mullin’s office for...