cowan. thank you for joining us. they accuse them of tampering with evidence and even go as far as russia of helping separatist rebels destroy the evidence. so how is the ukrainian government going to ever get to the truth if russia doesn t cooperate? well, julie, this is such an interesting issue that hasn t really been addressed properly yet, i think. the notion of an investigation. typically when an aircraft goes down there is an investigation run by international authorities that looks to the cause. was it a mechanical malfunction? was it pilot error? was it a terrorist incident, whatever? in this case we know clearly, everybody knows exactly what happened. that aircraft was struck by a missile fired from the ground. and therefore the only evidence on the ground that may be important is pieces of that missile. it doesn t matter where the missile hit the aircraft. it s pieces of that missile. and certainly the russians or the ukrainian separatists are trying to decide what things