Sentence 1: elbaradei stated that this is the last chance to build security in the middle east based on trust and cooperation and not on possession of nuclear weapons.

Sentence 2: this is the last chance to build security in the middle east based on trust and cooperation rather than on the possession of nuclear arms.

From 0 to 5 (0="no meaning overlap" and 5="means the same thing"), how similar are the two sentences?
4