Iran's foreign minister, a supporter of the nonnuclear deal, has resigned after saying that European countries have not continued enough trade with Iran to make it worth continuing the deal.

This is likely to strengthen the Iranian politicians that want more confrontation with the US — effectively, their equivalent of US neocons.

It might be rational for Iran to make nuclear concessions in exchange to keep the deal. But Iranians have national pride, as well as a valid grudge against the US.