I wouldn't get too worked up. Once a successor is named things will come back to normal because then the world can create a "play book", if you will, on the new leader and least have an idea of what to expect.
Right now we're just dealing with uncertainty. Futures should ease up to -10.00 before market open or in the green. Even if it opens red the DJIA, SP, NAS should be in the green by mid afternoon. If no successor is named then we might have an issue. The only thing IMO that would crash everything is NK and SK go to war or SK tries to occupy by force, NK.
-Rudy
Prosperity and growth in the stock market takes time, faith, and commitment to your investment.
-Rudy Lopez