Leaders of Ron DeSantis' Never Back Down super PAC met privately last Tuesday to hash out a strategy for fighting Nikki Haley's rise. Instead, two of them nearly came to blows with each other. The infighting represents an escalation in the long-running war between Never Back Down's professional political operatives and DeSantis’ Tallahassee-based inner circle over who is to blame for the governor’s failure to compete effectively with frontrunner Donald Trump for the Republican nomination. And, after tempers flared at last week's meeting, three close DeSantis allies — David Dewhirst, Jeff Aaron and Scott Ross — launched a second super...