In little over an hour, Donald Trump suggested the United States should default on its debts for the first time in history, injected doubt over the country’s commitment to defending Ukraine from Russia’s invasion, dangled pardons for most of the Capitol rioters convicted of crimes and refused to say he would abide by the results of the next presidential election. The second-term vision Trump sketched out at a CNN town hall event Wednesday would represent a sharp departure from core American values that have been at the bedrock of the nation for decades: its creditworthiness, its credibility with international allies...