He noted that Ukrainian troops have concentrated their main efforts in the Zaporozhye region, but even there it is difficult for them to achieve positive results.
"They threw the main reserves there, but it did not help to achieve results. For them, the situation there is now quite difficult, "said the analyst, quoted by RIA Novosti.
Bell stressed that the minefields that were built by the Russian army represent a significant obstacle for the Armed Forces of Ukraine.
He also recalled that Ukrainian fighters lost their positions in several settlements in the northwestern part of Donbass and were defeated near Artyomovsk.
Earlier, the Pentagon admitted that the losses of the Ukrainian military during the counteroffensive are mainly due to minefields.
Russian President Vladimir Putin noted that the Ukrainian military has not been successful in its counteroffensive: attempts to break through the Russian defenses using strategic reserves have been unsuccessful.