Having recently read David Wilkerson's, "Set The Trumpet To Thy Mouth", he was at the time expecting somesort of nuclear attack, and suggesting that when it came to the crunch, America would not be able (or willing?) to retaliate somehow. This was apparently based on his analysis of Bblical prophecy and his convictions- then, I don't supose it was infallible and it was dated 1985- right in the middle of the Cold War, when the USSR threat was imminent, Then, knowing Russia nowadays, one cannot know...

All in all I do not know.