I believe the Iranians are beginning to see the writing on the wall. The president will be re elected and they will not be able to put up with another 4 yrs of strangulation by an unrelenting foe such as the Maga Man.
Their economy is dying a slow, painful death. They have little bargaining power here, but I certainly don't trust Europe to take advantage of a strong hand. Europe has a straight flush, but will fold to Iran's pair of deuces.
As much as the leftists in the EU complain about the use military force, here they are rejecting the use of economic force. The EU, UN and other international bodies have ALWAYS pushed for sanctions over kinetic action. They finally have an anti-war US President, and they refuse to support him. In reality, it isn't American military force they are opposed to, or American sanctions, it's American Greatness, American Success and American Independence.