British ex-spy Christopher Steele, who wrote the Democrat-financed anti-Trump dossier, said in a court case that he was hired by a Democratic law firm in preparation for Hillary Clinton challenging the results of the 2016 presidential election. He said the law firm Perkins Coie wanted to be in a position to contest the results based on evidence he unearthed on the Trump campaign conspiring with Moscow on election interference. His scenario is contained in a sealed Aug. 2 declaration in a defamation law suit brought by three Russian bankers in London. The trio’s American attorneys filed his answers Tuesday in...