Western intelligence officials briefed repeatedly over the weekend that Russian forces have encountered “stiffer than expected” resistance from an outmanned and outgunned Ukrainian military.
Russia has thus far failed to take key cities across Ukraine, including the capital Kyiv. On Sunday, Ukrainian forces successfully repelled a Russian advance on a strategic airfield near Kharkiv, Ukraine’s second-largest city, which has been under near-constant attack.
“They are having problems,” a NATO official said of the Russian forces, pointing to the alliance’s latest intelligence. “They lack…
