It strikes me that there are many on the Republican side who have hated what Trump has done to the country and America's place in the world in general. I think they will find enough senators to stand with the Democrats and initiate articles of impeachment. I think there will be enough of a quorum to remove Trump from office and clear the deck for 2028, even if they know they can't win. But I also think that Trump will exit left and resign so that Vance can pardon him, and the Trump era will be done and dusted.
If the Jan 6th impeachment wasn't enough to remove Trump, no charge will work.
I don't know what Dems could actually impeach him for this time around. Iran wouldn't make sense since U.S. presidents have a long history of war crimes, including Obama and Bush leading regime changes. So that should cancel out Venezuela.