Beyond traditional threats from states such as China and Russia and non-state actors employing violent extremism, can America's politics and political system withstand the assaults of the Fifth Horseman and the new MAD, Massive Attacks of Disruption? The Covid-19 pandemic, the January 6 insurrection and takeover of the US Capitol, SolarWinds cyber attacks, the Texas storms that cut power, and the blocking of the Suez Canal are harbingers of the new MAD. And the nation is unaware and unprepared to deal with them. What must be done? First, we must recognize the potentially existential dangers posed by MAD. Second, we must reorganize government to meet these dangers. Third, we need new national security strategies to protect, defend, and mitigate these new threats. Fourth, we must create a private-public partnership in a national re-investment fund that can redress many of the risks of MAD. In this transformative, provocative, and highly innovative book, Dr. Harlan Ullman issues a dramatic warning about so far unrecognized existential dangers to the nation and offers a plan of action America must take if the Fifth Horseman and the new MAD are to be tamed or broken.