Once all the rage, emerging markets are getting clobbered by a "perfect storm" of declining energy and commodity prices, capital outflows and plunging currencies. This confluence of dangerous trends will soon trigger the collapse of several fundamentally weak global stocks. A major catalyst for the widespread abandonment of emerging markets is China. Once the world's global growth engine, the Middle Kingdom is now a drag on energy and commodity producers everywhere. Since 2010, China's economy has steadily slowed with each passing year. The latest official statistics show the economy grew 6.9% year over year in 2015. That compares with 7.3% in...