The Quartet Principles are the set of three requirements laid out by the Quartet on the Middle East for the diplomatic recognition of a Palestinian government as part of the Israeli–Palestinian peace process. The three conditions are: 1) non-violence, 2) recognition of the state of Israel, and 3) to respect previous Israel-Palestinian peace agreements.
The principles were first outlined on in October 2005 and reaffirmed in January 2006, after Hamas won the 2006 Palestinian legislative election. Hamas did not accept the conditions set out in the principles.