There is money to be made in foreign exchange, deposit-taking, and careful corporate lending (to oil exporters, for example).

ECONOMIST: Russian banking

Colombia is considering whether to reintroduce a measure to require foreign buyers to deposit 30% of the price of their financial investments in the country for a year at its central bank with no interest.

ECONOMIST: Latin America's economies

What policymakers and market players are worried about right now is if foreign investors see a Greek deposit crisis as a signal to rush for the exits in Italy and Spain.

BBC: Watch deposit flight, not the eurocrats

The UK justice system apparently didn't buy Wiese's explanation that the money came from diamond deals in South Africa in the 80s and 90s, and had been kept in a safety deposit box in the Ritz hotel because of foreign exchange restrictions in his homeland.

FORBES: Christoffel Wiese's unusual baggage

Low net worth individuals owning a high proportion of foreign currency assets would likely need to sell some of these assets if their cash deposit holdings (in Japan) did not cover their (immediate) needs.

FORBES: Will Japan Slow the Brazilian Carry-Trade?