Since German reunification in 1990, trillions of dollars have flowed to what was once East Germany. But now in tough economic times, some in the former West now question whether the investment is worth it.
President Obama will be in Berlin on Wednesday. Last time he was there, as a candidate in 2008, he was embraced by a crowd of 200,000 enthusiastic Germans. Five years later, the German welcome will not be as warm.