In his speech he never mentioned the part the UN nuclear inspectors play in it, that they Oked the centrifuge dismantle process six moths ago, and that there would be continuous inspection from then on.
He also didn't mention the downsides of not reaching an agreement with Iran. Bombing is no guarantee that they won't be able to make a nuclear weapon.
I'm not saying I agree with all of Mr. Netanyahu's points, just that he does have a valid opinion on the matter.
I don't think the agreement (if they reach one) is going to include dismantling very many centrifuges though. They seem to be working towards a deal where Iran keeps most of their centrifuges, but they are made to run less efficiently.