Philippe Aghion has had a very influential academic career at Harvard; recently, he has been advising Francois Hollande and he explains the new presidents’s supply-side economic strategy in this FT article.
By the way, the article also explains in passing:
This applies even more to the eurozone. Foreign observers have been worrying about Mr Hollande’s use of the word “renegotiating” in relation to the European fiscal pact. However, to a large extent, the issue is semantic. His use of the word “renegotiate” refers more to the notion of combining the existing budgetary agreements with a growth package than to truly renegotiating the budgetary part of the project.