Patrick Semansky / APWhite HouseBiden warns Putin of 'strong' response if Russia invades UkraineOpinionWhy Russia could be trying to invade Ukraine — and how Biden could stop itWATCH: Ukrainian president shows U.S. military hardware amid rising tensions with Russia
Sr. Airman Ryan Mancuso / 149th Fighter Wing Public AffairCoronavirus'A discipline issue': With vaccine deadlines passing, thousands in military remain unvaccinated6 states account for more than half of the country’s recent Covid hospitalizationsPfizer vaccine may be less effective against omicron, early lab data indicate
Marco Garcia / APWeatherState of emergency declared in Hawaii as storm leaves hundreds without powerStunning video, images out of Hawaii as slow-moving storm pounds region
Kimberly dela Cruz for NBC NewsSpecial reportHow the rise of electric cars endangers the 'last frontier' of the Philippines
