In an ever changing world, central bankers are reevaluating which currencies to add to their sovereign reserves. Central bankers, by the very nature of their positions, must take every precaution when investing their country's sovereign reserves.

Looking around we see Europe in a mess. Greece is being bailed out by its other eurozone partners. As a consequence, its borrowing costs have doubled to 9.4%. Yields on Portuguese debt stands at 6.3%, the highest since the euro started in 1999. Last month the EU announced a 750 billion euro rescue mechanism to stabilize the market. The euro hit a four year low of $1.1877 on June 7. As a sitting central banker, would you go there? Probably not.

The rally in gold just doesn't want to quit. You are probably wondering what is going on. Central banks around the world hold gold reserves. Periodically, they buy or sell gold, depending on how they view world markets. Right now, central banks are net buyers, the first time since 1988.

A weak US dollar is the main stimulus for central bankers' gold purchases. India just bought 200 metric tons from the International Monetary Fund. Central bankers in Mexico, Russia, the Philippines, all have increased their gold purchases.

For the fourth month in a row, Bank of England interest rates will remain at the record low of 0.5%. In an announcement today, the UK's central bank said it would not expand its quantitative easing of financial markets, much to the surprise of the market. The bank has been buying up assets aggressively, printing cash to finance what is likely to be £125 billion in purchases by the end of this month.

Financial markets expected a much different play, involving an increase in this asset purchase target by another £25 billion (to £150 billion). This move would have let the Bank of England shove even more money into the economy through next month, which is when the bank publishes its latest quarterly economic forecast.