Russia has gathered more than 100,000 soldiers of its occupation forces on the Lyman-Kupiansk axis.
Source: Serhii Cherevatyi, spokesman for the Eastern Group of Forces of the Armed Forces of Ukraine, on the national 24/7 newscast
Additional information: Russians went on the offensive on the Kupiansk front - Ukrainska Pravda
As the west seems to have superior intelligence, maybe this is why those very efficient but objected to cluster ammunitions were approved after all.
What do I know?
But Slava Ukraine!
Well, they are good for attacking concentrations of enemy soldiers.