Considering that there are millions of Russians there and 10-15 millions of Russian-Ukrainians, yes. South and East will not only accept but accept it gladly. W

Considering that there are millions of Russians there and 10-15 millions of Russian-Ukrainians, yes. South and East will not only accept but accept it gladly. West and center is a different story but then the area was always controlled by outside power - western provinces by Austria and Poland, Kiev and its surrounds - by Russian Empire. Give it 10-15 years and absence of rabid nationalistic media and things will change.