Contrary to the Obama administration's public claims blaming eastern Ukrainian rebels and Russia for the shoot-down of Malaysia Airlines Flight 17, some U.S. intelligence analysts have concluded that the rebels and Russia were likely not at fault and that it appears Ukrainian government forces were to blame, according to a source briefed on these findings.

This judgment ? at odds with what President Barack Obama and Secretary of State John Kerry have expressed publicly ? is based largely on the absence of U.S. government evidence that Russia supplied the rebels with a Buk anti-aircraft missile system that would be needed to hit a civilian jetliner flying at 33,000 feet, said the source, who spoke on condition of anonymity.

Despite U.S. spy satellites positioned over eastern Ukraine, U.S. intelligence agencies have released no images of a Buk system being transferred by Russians to rebel control, shipped into Ukraine, deployed into firing position and then being taken back to Russia.