Or both. The start of an article on President Obama has lost the argument on Iran.
When your best argument for an agreement is that the deal’s opponents are “making common cause” with your negotiating partners, it’s safe to say you’ve lost the debate.
As for those who take his word for things being idiots, he was elected twice and the media still love him. Highly rational with a deep respect for the past, for freedom and the constitution is not part of their frame of reference.