Sentence 1: the iranian government has dismissed the allegations in the intelligence presented to the international atomic energy agency board as baseless and the intelligence used to support the allegations as fake.

Sentence 2: the international atomic energy agency insists that the iranian government's simple denials of the intelligence presented to the international atomic energy agency board are not good enough to allay western countries suspicions.

From 0 to 5 (0="no meaning overlap" and 5="means the same thing"), how similar are the two sentences?
2