that is too cold but too long that is. >> the cbs evening news nsored s .>> o'donnell: tonight, president biden's threat to vladimir putin: stay out of ukraine or face new economic consequences. the high-stakes two-hour-long video call, president biden's warning tonight to america's adversary, as nearly 100,000 russian troops wait on the border of ukraine. 50 million covid cases: the a sg milestone as hospitalizations surge. when dr. fauci says we'll know how effective the vaccines are against omicron. maintaining his innocence: actor jussie smollett back on the stand facing the prosecutor who says he's lying about faking an attack on himself. teen safety measures: instagram unveils new features designed to