A lot of this is me speculating, but does seem reasonable.
2010 are spies start disappearing- Biden is VP.
2014 Russia in Ukraine, no one in the west pays attention.
2016 Presidential election, a compromised FBI agent makes the announcement that there is no clear link between Trump and Russia.
Hillary emails are made public.
2020 Biden becomes president.
2022 Russia expands it's invasion.
And a tweet I found in the responses explains it better than me.