Elegran
In an international situation it is of course international law which applies. It is no use telling a foreign head of state that Uk law says they can't do that in a third country. They would laugh in your face. The fact that Trump is as likely to ignore international law as he is to ignore the constitution of his own country is not a reason for Starmer to throw away the international lawbook. He is pretty keen on UK law, too, unlike some politicians.
International Law. Let's wait and see how many other countries Iran attacks, just for the hell of it, even their next door neighbours, who had done nothing.Where was International Law, and Starmer, and the EU, when Iran thugs were murdering their own people. They cried for help, Starmer and his cronies denied them.
As soon as this evil regime has gone the better.