Maduro (Venezuela) sees what Putin is doing, and how the West is maybe half supporting Ukraine, and sees an opportunity to do the same to their neighbor (Guyana), expecting the West will probably do nothing. It's remarkably similar in "justification" because "we want this land we owned 100s of years ago back, forget about the prior agreements and the borders that have long been in place.
tl;dr it's really about the oil, which does make it different from Putin trying to feel like a big man
tl;dr it's really about the oil, which does make it different from Putin trying to feel like a big man