This Israeli article is 10 months old. Although there is some propaganda in it as expected, like Iran wanting to destroy Israel or Iran being behind Hamas attack on Israel, in generel it describes Irans situation pretty well.
So it's not like Iran is hesitant to respond only to Israel and the US....Iran is not responding to ANYBODY, no matter how weak its opponent is, and there is a reason for that.
Iran Is Waiting to Reach a Nuclear Capability
Why is Iran relatively restrained and fearful of direct confrontations? - Iran Is Waiting to Reach a Nuclear Capability
jcpa.org
So it's not like Iran is hesitant to respond only to Israel and the US....Iran is not responding to ANYBODY, no matter how weak its opponent is, and there is a reason for that.