David Cameron has again defended Israel's right to defend itself against "hundreds of Hamas rockets", but added he found the high civilian death toll in Gaza "very disturbing".
He said he has urged Israel's Prime Minister Benjamin Netanyahu to take action to avoid civilian casualties.
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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