Since the implementation of the disengagement plan in 2005, Israel has alleged that it no longer occupies the Gaza Strip and claimed its right to legitimate self-defence based on Article 51 of the United Nations Charter, including the suffocating blockade imposed there as well as the ‘Cast Lead’military Operation and others. This paper analyzes Israeli’s claim in light of international law and the objective facts taking place in the Gaza Strip resulting from the implementation of the disengagement plan.