President Obama has suggested that Russia may be deliberately hindering the recovery operation of the Malaysian airliner to gather evidence.
He accused separatist rebels of tampering with the scene, saying their behaviour suggested they may have "something to hide".
ITV News Political Editor Tom Bradby reports on the diplomatic pressure on Russian President Vladimir Putin:
Thousands of online users have taken to social media to call for the victims of the Malaysian airliner crash to be returned to loved ones.
United States intelligence officials admitted that they do not know who fired the surface-to-air missile that downed flight MH17.
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