Pretty ironicaly, so called “Russian puppet” Yanukovych is literally the last Ukrainian president who was democraticaly elected by population of entire Ukraine (meaning within its 1991 borders).

Speaking about getting back 2013 Ukraine borders is not more reasonable than speaking about getting back 2013 Ukraine legitimate government. It’s impossible in real life to replay from save file - this means that Ukraine would stay with regime imposed by insurrectionists and without Crimea and Donbass.