How is it a ceasefire when one side declares it?
Shouldn't be like all the parties step forward and say we declare ceasefire. In this case the belligerents are Israel, Iran, and US, they all have some representative who informs the public the world that they agreed on a ceasfire.
And if someone violates it, then it can be said that:
> you agreed on a ceasfire, but you did not ceased firing, whats up with that?
But this is nonsense:
> you violated my ceasfire I declared, how dare you
Sure I can find references that Iran agreed on it, but really have to start digging.

Some might say this is because of Trump's ego, he is the big dog ordering everyone to behave. But I think it's relevant to what I wrote above, Trump have to look like who can make peace after he failed on delivering on his one day promise between Ukraine and Russia.
Either way if I was in the Kremlin I would laff my ass off.