I question first whether that is consistent with Christ's teachings, and second whether it would be at all availing in the light of prophecy (which BTW is quite valid and will come to pass no matter how unattractive we as individuals may find its particulars).
Better IMHO to couch the coming struggle in terms of our National interest and enlist the support of all Americans of good will be they Christians, or not.
And exactly how does fatalistic doom-mongering bring glory to the conquering Eternal King?