The unmasking was legit and unremarkable. It happens thousands of times each year.
never right before a change of power -days or hours- and certainly not without a national security issue..lets see the accompanying documentation
Where did you hear that?
There are on average over 10k unmasking requests each year - that's more than 27 each day.
Why would they stop before a transition?
Besides, you don't think an unknown American talking about US sanctions with the Russian ambassador is relevant to national security?