World leaders demanded an international investigation into the shooting down of a Malaysian airliner with 298 people on board over eastern Ukraine in a tragedy that could mark a pivotal moment in the worst crisis between Russia and the West since the Cold War.
Two U.S. officials said Washington strongly suspected the Malaysian Airlines Boeing 777 was downed by a sophisticated surface-to-air missile fired by Ukrainian separatists backed by Moscow.
There were no survivors from Thursday's crash, which left wreckage and bodies scattered across miles of rebel-held territory near the border with Russia.
Makeshift white flags marked where bodies lay in corn fields and among the debris. Others, stripped bare by the force of the crash, had been covered by polythene sheeting weighed down by stones, one marked with a flower in remembrance.
The scale of the disaster could prove a turning point for international pressure to resolve the crisis in Ukraine, which has killed hundreds since pro-Western protests toppled the Moscow-backed president in Kiev in February and Russia annexed the Crimea peninsula a month later.
While the West has imposed sanctions on Russia over Ukraine, the United States has been more aggressive than the European Union. Analysts say the response of Germany and other EU powers to the incident - possibly imposing more sanctions - could be crucial in deciding the next phase of the standoff with Moscow.
German Chancellor Angela Merkel, in an initial response, said it was too early to decide on further sanctions before it was known exactly what had happened to the plane.
Kiev and Moscow immediately blamed each other for the disaster, triggering a new phase in their propaganda war.