You make interesting points, but I don't think we can only read Trump's choices via the lens of Russia. I don't think he really has one coherent plan. We talk about him making choices to distract Americans from his poor polling numbers, and the economy, and ICE, etc. But we also have to remember that he, himself, is easily distractible. He ping pongs around the globe, alighting to fixate on something briefly, then caroms off to something else. And we know he's surrounded himself with sycophants, not statesmen, so it really is all about Trump, and which shiny objected he's distracted by at any given moment.
As to Venezuela, I think it's less about Putin than it is about Cuba, IMO. He's starving them into submission. And here, I do think Rubio has his ear.
As to Iran, Trump had the ability to illuminate for Congress and the American people what he was hoping to do in Iran, and passed on the opportunity. As many have said, no one is sad that Khamenei is dead. But there is no opposition organization to fill the void. Reza Pahlavi is gaming for the slot. I'm curious to know what
@brokenshoelace thinks about all of this.