Among the Polish leaders lost in the plane crash in Russia last weekend was Slawomir Skrzypek, head of the National Bank of Poland. Skrzypek was the architect behind the scenes of what has been Poland’s economic success over the last couple of years. Americans know all too well the effects of the big drop in economic growth we suffered last year. That same fate has befallen virtually all of Europe. While Europe’s GDP has fallen by 2.2 percent over the last year, Poland’s grew by 3.1 percent. It is quite a feat for a country's economy to grow while its...