Russian President Vladimir Putin has ordered stronger border security force to ensure fast Russian military and civilian movement into Ukrainian regions now under Moscow control.

In a message on telegram, Putin said their task is to reliably cover the lines in the vicinity of the combat zone.

He said it is necessary to ensure the fast movement of both military and civilian vehicles and cargo sent to the new subjects of the Russian Federation.

Kherson, Zaporizhzhia, Luhansk and Donetsk are the four regions in Ukraine that Putin proclaimed annexed last September.