Next up (I hope) is a similar agreement regarding Apple, the U.S., and Ireland.
The primary goal is to get Apple to pay each U.S. taxes on U.S. sales: when Apple sells an iPhone in the U.S, the profit should be realized in the U.S, not in Ireland in a Irish shell company. Then do the same for all other countries, so Apple pays fair taxes on fair profits to the right countries.
Forbes has a good introduction: http://www.forbes.com/sites/leesheppard/2013/05/28/how-does-...