very little has changed since then except that vladimir putin has been making more demands. he wants nato to pull back and troops moved from the eastern borders and doesn't want ukraine to join nato. what would come from this call that they didn't discuss a few weeks ago? >> a lot of speculation why putin requested the call. it is significant putin is the one who initiated the need for this conversation to happen barely over three weeks since the two leaders last spoke and barely two weeks before leaders from both countries are set to talk about these very issues in geneva on january 10. speculation that potentially it is because putin wants to de-escalate the situation or the exact opposite. he wants to lay out a list of aggressive demands that the biden administration has no ability to meet and use the failure of the biden administration to meet those demands as a pretext to invade