There are all sorts of factors motivating it. Crony capitalism (w.r.t. oil, for example) is another one of them. But that doesn't mean they justify the operation. At this point, it is a fait accompli. I pray that things don't get worse for Venezuela (the unfortunate side effect is that it will give supporters of this operation greater false confidence that they did the right thing; "Look! Nothing bad happened afterward!").

Furthermore, Trump has revealed that once again, he's full of shit. He and his people have been chanting their opposition to regime change operations and various military involvement for years, even until a few months ago. And now, voila.