Well, I saw a piece about the resignation of Deutsche Bank executives in the Wall Street Journal today, and thought of this thread.
Here’s one take on it: http://www.business-standard.com/article/international/6-reasons-anshu-jain-quit-deutsche-bank-115060900665_1.html
Even if English is the international language of business, if you end up leading a foreign company, you will be expected to master that language.