up the phone and speak to zelensky prior to his meeting with president putin. for the most part he's a rational player. on this issue, analysts say he is determined, whether it's now, a i few months from now, a few years from now, to bring ukraine back to russia's orbit. >> this is dangerous, delicate stuff playing out before our eyes. thank you very much. "new day" continues right now. welcome to our viewers here in the united states and around the world. it is monday, december 6th. i'm brianna keilar with john berman. we are beginning with breaking pandemic news. restrictions on international travelers coming to the united states taking effect this morning. if you are entering the u.s., you must show proof of a negative covid test taken within one day of your departure. and foreign nationals will now have to show proof they are fully vaccinated. covid is seurpblging in the