Markets around the world are getting rattled by what's happening between Russia and Ukraine as well as the possibility of slowing economic growth in China.
Despite the fact that all of those places are thousands of miles away from America's shores, they're still having a profound impact on U.S. markets. Traders up and down Wall Street are pointing to a renewed sense of risk aversion.
The question becomes whether or not this is the beginning of that long-awaited correction for U.S. stocks. The last time the bears tried to press their case was around the middle of January through the first week of February. During that time, the dropped around 6 percent, but bounced back in relatively short order before reaching new record highs in early March.