Barack Obama actually said...

"The separatists are removing evidence from the crash site, all of which faces the question what exactly are they trying to hide?"

"Russia and President Putin in particular as direct responsibility to compel them to cooperate with the investigation that is the least that they can do."

"The burden now is on Russia to insist that the separatist stop tampering with the evidence, grant investigators who are already on the ground immediate, full, and unimpeded access to the crash site."

"Given its direct influence over the separatists, Russia and President Putin in particular has direct responsibility to compel them to cooperate with the investigation. That is the least that they can ..."