Oh, you added more since I responded. Exactly, it's up to the said governments who to invite in. Seems like you have no issue with that...unless those invited are American. You are entitled to that opinion. Personally, I feel for the Venezuelan people, but they made their choices and have to deal with them. It's obvious many Venezuelans who aren't on the corrupt payroll are unhappy, suffering and hungry. I wish them luck. As I mentioned earlier, I have no desire to see US forces there, I am actually against it - even though you keep stating the opposite.
I also figure at some point the PEOPLE will want freedom enough to get rid of Maduro. I also expect they'll remember what the Russians and Cubans did to prolong their suffering. And have no doubt, Putin is calling the shots in Venezuela right now, not Maduro.