Assessment: The announcement by the Iranian Revolutionary Guards (IRGC) that Ismail Hanieh was not eliminated by a missile that arrived from outside the country's borders reduces Iran's internal legitimacy to attack Israel with missiles and UAVs as a kind of eye for an eye (missile attack from the outside in retaliation for a missile attack from the outside). Also the announcement by the Revolutionary Guards that says that They will respond "at the right time and place" is a kind of climbing down from the tree.
Indeed, the latest notes that the mossad paid off IRGC security and got them to plant bombs in the guest residence - long identified as the common lodging place for Hanieh when he visited Tehran. Whether this fact is going to serve to reduce the potential strike to something more ‘symbolic’ versus lethal is yet to be seen. But Amir’s assessment holds water - Iran is in a delicate game of global PR and facing a western rush to get forces into the region as a deterrent.
Hezebollh, OTOH, may feel less constrained. But if Iran is getting cold feet it may impact support they could provide to the in an all out war with Israel. Israel for its part is continuing to cut up Hezbollah commander - increasing the chaos of chain of command reestablishment vital to control either a defensive or offensive operation against Israel.
]Just have to wait and see.