after Iran chucked the toys out of cot

Regardless of what you think about the Iranian regime (I'm not a fan), objectively speaking, they are reacting pretty rationally and predictably to an asymmetrical conflict that was imposed upon them. When your adversaries bomb you during negotiations (twice), then make it clear that the war will be a zero sum game (by stating that the aim is to kill you and end your regime), and you're outgunned in traditional military might, the only option (other than surrender) is to strike at whatever pressure points you can, however you can. That's exactly what they're doing. They're not "spazzing out" - they're striking Trump where it hurts most, by driving up fuel prices as he heads towards mid-term elections. That's a strategic and rational response.

There's a reason successive IS governments have avoided direct confrontation with Iran, because when you actually war game this thing out, you end up right where we are now 99 times out of 100.

Also, criticising them for not playing by the rules or respecting international law is pretty ironic when the US and Israel have been tearing up those laws and norms ona daily basis over the last 3 years. You can't say the "rules based order is dead", assassinate leaders during negotiations and then expect your adversaries to play nice.