NATO on alert: “Russia is gaining war experience every day”. “It seems that the Russians are learning,” observes Frederik Mertens, an analyst at the Hague Center for Strategic Studies.
Challenger and Abrams tanks in particular are said to have become the first victims of Russia's new curiosity. The longer the trench warfare lasts, the better the Russians can adapt to it - i.e. learn from war in war. This in turn would then equalize technological progress.