The most efficient policy for Russia is to retain the highest tension with Ukraine with the help of West 3. Ukraine disintegrates with increasing speed

 The Ukrainian economy disintegrates at an increasing rate due to the efficient actions of the West. The chaotic events with evacuating Ukrainian citizens and businessmen, western embassies, and local authorities make the Russian position stronger every day. Zelenskii is crying already that there is no Russian threat and everything is under control. Biden says that the invasion is inevitable in a few days. Russia waits before the next freezing weather condition but it is not to invade. The reason is simple - stop the energy supply to Ukraine to destroy the energy system and stop nuclear stations. This will ruin Ukraine as an economic and social system and the army will freeze. Just a few cold days.