Opinion Rescue workers climb over and dig through piles of rubble from the destroyed World Trade Center as the American flag billows over the debris, Sept. 19, 2021. Photo by Andrea Booher/ FEMA News Photo Shocked by the sudden and brutal Russian invasion of Ukraine, the world is still trying to sort out the implications for its immediate future and, perhaps, the rest of the century. Everyone, however, seems certain that the world has entered a new era. Something like a paradigm shift has taken place, and one of the most important but still unspoken results is likely to be...