conference room where he and litvinenko had met two weeks before the pine bar encounter. was anything spilled on the table? >> richard. you're asking questions. i remember some things. i don't remember other things. i cannot answer these questions because these can be used against me in a court, which is done frequently. >> as for his last meeting with litvinenko at the pine bar, lugovoi says there is no way he bought polonium on that trip because his wife and children were with him. >> a persons we can spot is his family. and i'm a rational man. even if i had taken part in an operation, even if i had known what was in a container, would i take my family along? i'm a rational man. i couldn't do it. >> not only did he continue to maintain his innocence, he offered his own theory about who poisoned the teeth. could someone have put something in there without you noticing?