made the remark that they had to clean up right away? >> reporter: it's great to see you back on air. thank you. >> reporter: i think president biden has been very clear in person with vladimir putin when they have met in public and so has his senior leadership team in the national security and state department agencies that any crossing of ukraine's border by russian troops will be responded to quickly, forcefully, decisively. and i think president biden has done a strong job of organizing, corralling, assembling our nato allies and european partners to send a strong message to putin and putin's russia that there will be high costs for invasion of ukraine. >> but he wasn't terribly clear yesterday? >> look, what he was saying out loud is a concern many of us have. russia showed over a number of conflicts the last couple of years a willingness and ability to use gray zone attacks,