CNN CNN Newsroom Live December 4, 2021 09:25:00
>> reporter: exactly, in the spring, a buildup of russian troops for military close to ukraine, and in a series of communications between the united states and russia. and the summit, vladimir putin and u.s. president joe biden. now, the difference is that moscow is more open about its demands. maybe for the first time vladimir putin openly demanded obligations, guarantees, first he mentioned guarantees, then he mentioned obligations, not to expand nato war space. >> so this is just a negotiating ga gambit, you think? it doesn't seem that are moscow is preparing to strike first? putin once sai...