If there were questions about whether Jeb Bush is like his brother, he dispelled some of them on Wednesday at the Chicago Council on Global Affairs. In November 1999, candidate George Bush scored only 25 percent when a Boston television political reporter gave him a pop quiz on world leaders. Jeb Bush, on the other hand, displayed a command of the world on topics from Cuba to ISIS to the relationship between energy and American security. He surpassed his brother at a far earlier period in this cycle. He also surpassed his 2016 rivals Govs. Chris Christie and Scott Walker, who have had trouble clearing the foreign policy hurdle easily.