From what I understand, Henry Gruver (a global prayer walker) and Dumitru Duduman (a Romanian pastor who had been imprisoned and tortured for smuggling bibles) both had visions (decades ago) about the east coast and the west coast being attacked simultaneously from missiles launched by submarines. They both indicated that the coordinated attack was made by Russia and China (who were in league with about 6 other nations).

Gruver also said that he saw God intervene in specific situations: using ash from volcanic eruptions to stop missiles and using lava flow to stop troops (from reaching specific geographical areas).

Gruver indicated that most of the areas God allowed to be destroyed were geographical areas where wickedness reigned. Gruver also said that God told him He would gather the wicked people into those areas before allowing those areas to be destroyed (like Sodom and Gomorra).

In addition, Gruver said that he saw God supernaturally protecting groups of people who were on their knees praying to God: the invading armies divided and marched around/past the praying people as if they were moving around a giant bubble and they didn't seem to notice the humble / praying people.