Equation
Lieutenant General
And then of course you have folks like Steve Bannon who see war as an excellent tool to bring the nation together -- just as the fascists of the past did.
Frankly I think this is a topic that receives far too little attention.
America's militarism, with the robust and layered mythologies that sustain it (from messianic Protestantism in the revolutionary era, to 'manifest destiny', to WW2 as "a good war against evil" that Americans never tire of reliving, to the supposed moral clarity of the Cold War and the unhinged moralism of the unipolar moment -- all stories that further and support the idea of redemptive violence) coupled with the otherwise acute and increasing fractures and dysfunction in American society, and the psychological stress of displacement from its status as the world's most powerful nation, combine to create a real risk of American belligerence in the medium-term.
To be clear, the danger is not that the United States is going to arbitrarily declare war on and invade China or Russia, the risk is that the United States will not seek to avoid war by mitigating tensions that arise with constructive diplomacy. It may encourage other nations with which China (or Russia) have disputes to act in ways that escalate tensions, providing an excuse for America to declare war.
All of this is basically unspeakable in the western world. Even those who are critical of American history, foreign policy, and/or who are horrified by Trump like to imagine him as a fluke and not a symptom of a progressing disease. Even those who acknowledge the possibility of an increasingly fractured relationship between China and the United States, or even the possibility of conflict, like to frame those ideas in terms of agent-less structural developments, or as emerging from Chinese actions. The idea that it is the United States that may be the real problem is unspeakable, certainly by Americans who value their careers.
But China cannot afford such a comforting blindspot. China must appreciate that it is dealing with an extraordinarily powerful, militaristic, and psychologically distressed nation that may come to act in increasingly reckless ways. Like a family that must hide from and attempt to placate a drunken and abusive father, China must remain acutely aware of the power relationships that exist (that will largely continue to favour the United States over the medium-term), of the potential consequences of conflict (military, but also economic), and choose carefully where and how to pursue its interests and if and how to respond to slights and adverse developments that will occur.
TL;DR: Don't overestimate American rationality, or underestimate American power.
Bottom line is the majority of the American people would NOT accept a large casualties of their men and women in the Armed Forces getting killed overseas. The people are already tired of wars through out the Middle East since 9/11. The war rhetoric's are done by a bunch of old American geezers who thinks the world revolves around them. They just can't accept or adapt to the changing times and world.