Newt Gingrich promised conservatives on Tuesday he would ask former U.N. Ambassador John Bolton to be his secretary of state if he’s elected president next year, according to several of those who met with him Hours later he repeated that vow publicly to the Republican Jewish Coalition, winning a round of applause. “If he accepts it, I will ask John Bolton to be secretary of state,” the former House speaker said. During the closed-door meeting in Arlington, Mr. Gingrich spoke and fielded questions for about two hours from 70 conservatives, and they said afterward that they came away impressed. One...