Unfortunately, I don't think they are thinking about the rest of the world. It's all about themselves. About staying in power and avoiding the consequences of their actions. Hence, Musk attacking all the agencies trying to hold him accountable and Trump allowing him to trash the economy and the ability of the structures to hold in him check. Martial law would be the cherry on the cake and allow him the control he really strives for.
How he is dealing with the rest of the world, is a reflection of that, of his ego and the need to be the centre of things, rather than any understanding of what he is doing. It's all about power for him and at the moment those that enabled him to get that, are serving his purpose and will be allowed to do what they are. He doesn't care about their plan for the country, only that he's in charge.
As far as the rest of the world is concerned, this is the death knell for American influence. Most of it already knows what it truly means in terms of violence and interference in their autonomy. But, for the rest, this is the game changer that will either bring them together, or force them to make the choices they might not want to make.