we warned you, stay out of our skies posted by someone claiming to be a russian-backed commander. that post later removed, not long after the plane was identified as a passenger plane. travelers from all over the world, killed. ukraine's president is calling the incident a terrorist attack. >> we ask all respective governments to support the ukrainian government to bring to justice all thesis who committed this international crime. >> reporter: and u.s. senator john mccain is laying blame right at russia's door. >> separatists could have only gotten that capability from russia and, so, therefore, the culpable party here is vladimir putin. >> reporter: but russian president vladimir putin says ukraine is to blame saying, "this tragedy would not have happened if there had been peace on that land or in any case if