Bannon was in high spirits when he phoned me Tuesday afternoon to discuss the politics of taking a harder line with China, and minced no words describing his efforts to neutralize his rivals at the Departments of Defense, State, and Treasury. “They’re wetting themselves,” he said, proceeding to detail how he would oust some of his opponents at State and Defense. “To me,” Bannon said, “the economic war with China is everything. And we have to be maniacally focused on that. If we continue to lose it, we're five years away, I think, ten years at the most, of hitting...