It gives preferential treatment to Jews regardless of their religious practice or lack thereof.

Its self-definition as a "Jewish state" is deliberately vague about its definition of "Jewish", and is in practice closer to Western ideas of ethnicity/nationalism than to "religion".

The claim was that all religious Jews believe this. The motte-and-bailey is unseemly.

The Paris Agreement included an explicit clause allowing parties to exit it after giving notice of withdrawal. It did not go out of effect immediately on Trump's election, but the administration went through the legal procedure.

The NPT has much stricter terms for withdrawal, which in any case Iran has not followed.

(The better and much more relevant analogy would be the JCPOA. That's what happens when the US does foreign policy by "executive agreement" instead of treaty. Foreign countries should not value them more than the paper they're written on.)

Benjamin Netanyahu is a rabid nationalist, not a religious fundamentalist.