time of war. because those who don't wear it, those who don't show the "z" could be targeted by the state. >> reporter: and in this highly produced propaganda video russian men wearing that letter declare their support for the invasion, chanting, "for russia, for the president, for russia, for putin." an aerial shot shows a giant "z," a traditional symbol of russian military glory usually associated with victory over nazi germany. by accident or design a character that doesn't feature in russia's alphabet has become an iconic symbol of putin's invasion and the propaganda campaign to win support among his people. fill phil black, cnn, london. well, coming up former director of national intelligence james clapper joins me live. a look at the cia's assessment