Top U.S. intelligence officials believe Russia underestimated the strength of Ukraine’s resistance before launching an invasion that has likely caused thousands of Russian casualties
Russian troops killed in the invasion probably number between 2,000 and 4,000, said Lt. Gen. Scott BerrierTom Williams/CQ-Roll Call, Inc via Getty Images
The testimony, in a hearing before the House Intelligence Committee, amounted to the first public assessment of the 2-week-old war by the nation's senior intelligence officials, who offered their insights into the thinking and motives of Russian President Vladimir Putin as his forces continue their march through Ukraine.
More than 1 million people have evacuated Ukraine, and some refugees have been killed by Russian military strikes that hit common evacuation routes. That has renewed calls for humanitarian corridors out of Ukrainian cities. Meanwhile Ukraine's western neighbor, Poland, is seeing huge crowds at community centers and train stations near the border. As these crowds grow bigger, officials' plans to help can only extend so far, NBC News' Jay Gray reports.