Russia concentrates forces in Kupiansk sector, forms diverse group – military commander

He said this on Espreso TV. 

“Russian troops are concentrating their forces in the Kupiansk sector, where they have a mixed grouping because they have a big problem with personnel. They are not able to form more or less monolithic groups, so they are pulling up all the units they can find. These include airborne, motorized rifle, BARS, territorial troops, and army corps of people's militias from the occupied territories. Various PMCs are also sent there, including Fakel, Veterans, Patriot, and others. They also used Storm Z company personnel who have issues with the law as an emergency recruitment,” the spokesman for Ukraine’s Eastern Military Grouping said. 

• On May 29, the AFU General Staff reported that the Ukrainian military repelled 19 enemy attacks in a day.

• On May 31, the evening report of the  AFU General Staff said that the Ukrainian military had hit a Russian command post and two munitions depots.