secretary of state antony blinken. but president biden, everyone is calling it into question. we've also heard today from russia now issuing its long-awaited written response to the united states' response to russia's security proposals or demands. this has taken three weeks for russia to write this all down. and what they are saying is that because their core security concerns have not been met, they will have to take steps that may include military, technical measures. now this is a sort of language they were using many weeks ago when implying that if they didn't get their requests for their concerns over ukraine being able to join nato, nato going back to 1997 levels, then these military technical levels would be an option. now to put it in the context now. this is their now considered response. after weeks of consideration, they are again threatening those military technical measures. john? >> nic robertson, keeping track