Well in this case I am talking about just my 401K money for the most part.
Could be my age making decisions for me here as well,
I would rather wait for a big decline (some type of Black swan thing) before jumping in than be in and see Iran on the news one morning before the market opens. Or some other event.
On Iran, what would be worse for the markets?
1) Iran were to one day announce they have nuclear capability and no longer will they be at the mercy of western powers,
2) Iran were to announce full on war after some kind of attack.