Sergei Menyailo appointed Presidential Plenipotentiary to the Siberian Federal District 2016-07-28 12:55:00 The President signed an Executive Order On the Presidential Plenipotentiary to the Siberian Federal District. The executive order enters in force upon its signing. * * * Vladimir Putin met with Sergei Menyailo late on yesterday evening. Earlier, Sergei Menyailo was relieved of his duties as Governor of Sevastopol by another executive order.