Putting B-52s on alert, conventionally or even nuclear armed,  is a really ominous step and it seems to indicated Trump could order a pre-emptive strike.  Would that order be justified or even legal, resulting in his immediate impeachment?  What happens when some B-52s are shot down like in Vietnam. with nuclear payloads?  I can only hope that the Republicans will come to their senses at that moment and realize their political posturing could result in miscalculation, drawing in China and Russia into the conflict and set off WWIII.  Will they really back Trump  no matter what, if they come face to face with catastrophe for American troops, their own families and children/grandchildren, not to mention massive amount of casualties and destruction in and around the Asian continent?