See below links to two interesting articles.

The first is by Paul Krugman, ‘Ending Greece’s Bleeding’ in the New York Times.

The second is by Thomas Picketty ‘Germany has never repaid’ from the German newspaper Die Zeit.

http://www.nytimes.com/2015/07/06/opinion/paul-krugman-ending-greeces-bleeding.html?rref=collection%2Fcolumn%2Fpaul-krugman

https://medium.com/@gavinschalliol/thomas-piketty-germany-has-never-repaid-7b5e7add6fff