Initiator of the bill allowing Russian Federation to admit in its composition, under the pretext of protection of Russian citizens, territories of a foreign country without the consent of that country or an international treaty.
On 22 February 2022 Mironov supported, in the State Duma, the ratification of the government decisions of the “Treaty of Friendship, Cooperation and Mutual Assistance between the Russian Federation and the Donetsk People’s Republic” and the “Treaty of Friendship, Cooperation and Mutual Assistance between the Russian Federation and the Luhansk People’s Republic”.
On 15 February 2022, Mironov supported, in the State Duma, the resolution asking President Vladimir Putin to recognise the Ukrainian regions Donetsk and Luhansk as independent states.