Experts : Investigation should not include parties involved in Ukraine conflict . Intelligence agencies likely to have assessments by Friday . Comment: Obama will probably walk into the Oval Office on Friday to find an assessment that gives a pretty clear picture on where the missile was launched . The fact that pro-Russian separatists control the crash area will hamper the investigation .
Experts : Investigation should not include parties involved in Ukraine conflict . Intelligence agencies likely to have assessments by Friday . Comment: The fact that pro-Russian separatists control the crash area will hamper the investigation .