War in Ukraine: Key weeks ahead for Russia’s offensive in Ukraine BBC.com
Ukraine says it has checked Russia's offensive in a key town, but Moscow says it will keep pushing The Associated Press
Exclusive satellite images show destroyed Russian jets and building at Crimean airbase CNN

As Russia Advances, NATO Considers Sending Trainers Into Ukraine The New York Times
Top NATO commander: Russia's offensive won't succeed POLITICO Europe
Russians 'don't have numbers for strategic breakthrough' in Ukraine: NATO Euronews