Russia knows that the Ukrainians raise the issue of "gray zones", Putin noted.
For Russia there is only one demarcation line with Ukraine - the country's border line, the president stated.
The president also offered to organize a humanitarian mission from Kostantinovka based on Aleshki's experience.
Putin stated that Russia controls Konstantinovka and is ready to ensure the security of the humanitarian mission.
The president suggested tasking the public complaints officers of the Russian Federation and Ukraine to work on organizing the mission.
Russia needs 5 days to destroy near Konstantinovka; If Kiev believes it controls the city, let it guarantee security from its side, Putin said.
Putin said he wanted peace in Ukraine to be eternal.
Foreign soldiers in Ukraine would be a legitimate target for the Russian armed forces, Putin stated.