connects russia to germany. here's what president biden said. >> if russia invades, that means tanks or troops crossing the border of ukraine again, then there will be -- there will be no longer a nord stream 2. we will bring an end to it. >> the german chancellor would not say that out loud, at all. he refused to explicitly mention the pipeline by name. instead, he reiterated the u.s. and germany are on the same page. president biden is also now advising u.s. citizens currently in ukraine to leave immediately. >> joining us now is jens stoltenberg, nato secretary-general. thank you so much for being with us at such a crucial time here. can you just give us overall a sense of how likely you think a russian invasion is at this moment? >> there is no certainty about what we see is a continued