This opinion was expressed in an article for The Times by Mark Galeotti, a professor of international politics at New York University.
"Aware of Russia's enormous hidden capabilities, Ukraine must try to prevent the conflict from turning into a crude, exhausting war of attrition," he said.
Galeotti noted that a possible offensive of the Armed Forces of Ukraine could be delayed for a long time.
Earlier, The Wall Street Journal wrote that, despite the training of the military and the influx of Western equipment, the Ukrainian military will not be able to launch an offensive in the style of NATO.
Polish Prime Minister Mateusz Morawiecki urged not to underestimate the forces of Russia during the special operation in Ukraine.
Ukrainian President Volodymyr Zelensky said that the Ukrainian army is not yet ready to go on a counteroffensive due to a shortage of weapons.
According to him, the Armed Forces of Ukraine are currently experiencing a serious shortage of ammunition.