Much of the rest of the known case against Russia comes from claims made by the Ukrainian regime, which emerged from the unconstitutional coup d'etat against elected President Viktor Yanukovych on Feb. 22. His overthrow followed months of mass protests, but the actual coup was spearheaded by neo-Nazi militias that overran government buildings and forced Yanukovych's officials to flee.

In recognition of the key role played by the neo-Nazis, who are ideological descendants of Ukrainian militias that collaborated with the Nazi SS in World War II, the new regime gave these far-right nationalists control of several ministries, including the office of national security which is under the command of longtime neo-Nazi activist Andriy Parubiy.

What I've been told by one source, who has provided accurate information on similar matters in the past, is that U.S. intelligence agencies do have detailed satellite images of the likely missile battery that launched the fateful missile, but the battery appears to have been under the control of Ukrainian government troops dressed in what look like Ukrainian uniforms.

The source said CIA analysts were still not ruling out the possibility that the troops were actually eastern Ukrainian rebels in similar uniforms but the initial assessment was that the troops were Ukrainian soldiers. There also was the suggestion that the soldiers involved were undisciplined and possibly drunk, since the imagery showed what looked like beer bottles scattered around the site, the source said.