Source: http://www.cnn.com/2015/11/04/africa...nai/index.html
If this is true expect a full scale military escalation by Russia in Syria. This is going to open up the flood gates
(CNN)Days after authorities dismissed claims that ISIS brought down a Russian passenger jet, a U.S. intelligence analysis now suggests that the terror group or its affiliates planted a bomb on the plane.
And British Foreign Minister Philip Hammond said his government believes there is a "significant possibility" the plane was brought down by an explosive device. Also, a Middle East source briefed on intelligence matters also said it appears likely a bomb was placed aboard the aircraft.