Two developments in the past few weeks suggest that America’s China policy is on a cusp.The more publicly discussed event involves the Arleigh Burke-class destroyer USS Dewey, which conducted a freedom of navigation operation near Mischief Reef in the Spratlys island group.This is the first freedom of navigation action conducted by the Trump administration. It is the first true freedom of navigation conducted since at least 2012.By contrast, the Obama administration had undertaken a handful of “innocent passage” activities in the South China Sea, which failed to demonstrate the critical issues at stake.The actions carried out in the previous administration...