War of the League of Cambrai

http://en.wikipedia.org/wiki/War_of_the_League_of_Cambrai

Pope Julius II, intending to curb Venetian influence in northern Italy, had created the League of Cambrai, an anti-Venetian alliance that included, besides himself, Louis XII of France, Holy Roman Emperor Maximilian I and Ferdinand II of Aragon. Although the League was initially successful, friction between Julius and Louis caused it to collapse by 1510; Julius then allied himself with Venice against France.

 http://tarpley.net/online-books/against-oligarchy/the-war-of-the-league-of-cambrai-paolo-sarpi-and-john-locke/

http://www.schillerinstitute.org/fid_91-96/952_venice.html