http://www.cnn.com/2014/07/17/travel/malaysia-airlines-crash-air-space/
Sounds like there is plenty of blame to go around. The FAA prohibited airspace above the Crimea, but not in this area. The US airlines had voluntarily decided to avoid the area.
“The Federal Aviation Administration said Thursday that U.S. airlines had voluntarily agreed not to operate in airspace near the Russian-Ukraine border. Later, the FAA issued a notice prohibiting U.S. flight operations in the airspace over eastern Ukraine until further notice.”
Also in article:
“In April, U.S. airlines were prohibited by the FAA from flying in airspace surrounding Crimea, but Thursday's crash site was not within what was considered restricted area.
The International Civil Aviation Organization and European Aviation Safety Agency also issued warnings in the spring against flying in the same area, the Simferopol Flight Information Region.
The crash occurred outside the warning area near the town of Torez in eastern Ukraine's Donetsk region.
“What I can't understand is why civilian airliners were flying over this area, which is just a huge error on their part,” said Bob Baer, a CNN national security analyst and former CIA agent.
Most airlines follow the guidelines and rules set by their national civil aviation authorities and fly the most direct route from their departure to their arrival city, said Mary Schiavo, former inspector general of the U.S. Department of Transportation.
The FAA and other national civil aviation authorities hadn't yet defined the area where the aircraft got shot down as part of the conflict zone in Ukraine, Schiavo said.”
FLIGHT DIVERTED AFTER ROCKET LANDS NEAR TLV
FAA CLOSES ROUTE TO ISRAEL
The FAA does not control Malaysian Airlines, Finn Air, India Air, Singapore Airlines, nor any of the other 15+ international carriers that had flights through that area that day.