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Rating takes a new turn for the worse. and tribute to mccain. a rare honor tonight for the late senator as he lies in state in the u.s. capitol. mccains 106-year-old mother joining with top officials here in washington for an emotional good-bye. we want to welcome our viewers in the united states and around the world. im wolf blitzer. youre in "the situation room." >> announcer: this is cnn breaking news. were following breaking news that cuts to the heart of questions about what the russi...