CNN CNN Newsroom Live December 12, 2015 10:45:00
Surface-to-air missile that shot it down. we had a fair idea of which one, although we still had homework to do. >> reporter: home workwork done lightning speed. they were confident they had d the murder weapon and perpetrators telling president obama russian-backed separatists had fired a russian-made missile that sent nearly 300 people plunging to their deaths. >> that was our chief national security correspondent, jim sciutto. of course, we continue to watch events in paris where those crucial climate talks are coming to a head after almost two weeks of debating do. stay with cnn. we'll b...
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