Well if UK can close it's airspace, under the guise of NATS withdrawing it's services, due to a volcano in Iceland, along with multiple other countries then the Russian Federation might close it's airspace also under one or more guises.
Of course, as other(s) have pointed out, many a Europe-Asia-Europe wide-body routes over Russia providing a valuable income to the Russian economy, if they lose that income then life simply becomes more difficult for the good and innocent folk of the Russian Federation.
Sooner or later they may realise that one, just one, person needs to be removed for things to get back to normal!