In New Hampshire there is a fifth season - it occurs in late winter and early spring, in other words, about now. It is called "mud season".
Ukraine and Russia also have mud season. And that season is infamous for bogging down wars - people, horses, vehicles would sink and get stuck.
There is a lot of reason to suspect that the present desire to have a cease fire in Russia's war of aggression in Ukraine is desired by Russia less in any peaceful spirit than in the desire to have a period to re-arm and re-fit its military and avoid fighting in mud-season.