With a huge cost in blood and loss of life, it can be forced back up enough to have a chance to survive.
The failure of our leaders - both parties and all stripes and persuasions - to see or act on that is the stuff of fools, traitors, cowards or all of the above.
Please allow me to demonstrate, regretfully so, just what a sisyphean undertaking such an if-only endeavor would entail outside the utilization of nuclear weapons;
Simply extrapolate what we've endured in terms of casualties,budgeting tackling an infinitely, emphatically much less overwhelmingly complex objective, the relatively simple task of implementing/stabilizing regime change, to give what is arguably some cosmic-sized ballpark estimate of what it would require, figures exponentially too mind-numbing to really think about.