Ukraine’s decision to change tactics is a clear signal that NATO’s hopes for large advances made by Ukrainian formations armed with new weapons, new training and an injection of artillery ammunition have failed to materialize, at least for now. It raises questions about the quality of the training the Ukrainians received from the West and about whether tens of billions of dollars’ worth of weapons, including nearly $44 billion worth from the Biden administration, have been successful in transforming the Ukrainian military into a NATO-standard fighting force. “The counteroffensive itself hasn’t failed; it will drag on for several months into the fall,” said Michael Kofman, a senior fellow at the Carnegie Endowment for International Peace who recently visited the front lines. “Arguably, the problem was in the assumption that with a few months of training, Ukrainian units could be converted into fighting more the way American forces might fight, leading the assault against a well-prepared Russian defense, rather than helping Ukrainians fight more the best way they know how.”President Vladimir V. Putin of Russia has increasingly signaled that his strategy is to wait out Ukraine and its allies and win the war by exhausting them. American officials are worried that Ukraine’s return to its old tactics risks that it will race through precious ammunition supplies, which could play into Mr. Putin’s hands and disadvantage Ukraine in a war of attrition.

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Persons: Biden, ”, Michael Kofman, Vladimir V, Putin, Putin’s Organizations: NATO, Carnegie Endowment, International Peace Locations: Russia, Ukraine