That worked rather, uh, well: http://www.economist.com/blogs/easternapproaches/2011/11/polands-appeal-germany http://www.economist.com/blogs/easternapproaches/2

That worked rather, uh, well: http://www.economist.com/blogs/easternapproaches/2011/11/polands-appeal-germany http://www.economist.com/blogs/easternapproaches/2011/11/pol... On the other hand, it works relatively well if you only consider going to war against each other within Europe, which definitely was the main concern in the 1950s. How peaceful this united Europe is towards other countries is another question altogether – again resorting to history does not necessarily offer hope.