The US Dollar rally, combined with the ECB's policies and the Fed's hint at raising rates in December, is at risk of blowing up a $9 trillion carry trade.

When the Fed cut interest rates to zero in 2008, it flooded the system with US Dollars. The US Dollar is the reserve currency of the world. NO matter what country you're in (with few exceptions) you can borrow in US Dollars.

And if you can borrow in US Dollars at 0.25%... and put that money into anything yielding more… you could make a killing.

A hedge fund in Hong Kong could borrow $100 million, pay just $250,000 in interest and plow that money into Brazilian Reals which yielded 11%... locking in a $9.75 million return.

This was the strictly financial side of things. On the economics side, Governments both sovereign and local borrowed in US Dollars around the globe to fund various infrastructure and municipal projects.

Simply put, the US Government was practically giving money away and the world took notice, borrowing Dollars at a record pace. Today, the global carry trade (meaning money borrowed in US Dollars and invested in other assets) stands at over $9 TRILLION (larger than the economy of France and Brazil combined).