Given the global paradigm of what's going on in the EU, Greece, China - Is the US Stock Market Poised For A Nose Dive?

It's well known that economic activity can not justify the exponential growth of the stock market. The government has propped up the market with "quantitative easing" for years. But, external events around the world seem to have the attention of investors. Maybe reminding them how fragile a corrupt market can be.