The Disasters Emergency Committee has launched a new video to appeal for donations to help the victims of a devastating war in Syria.
More than 5,000,000 people are in urgent need of humanitarian help and half of those are children, it says.
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In the unexpected announcement on Monday, Mr Key said it was the "right time" to leave politics.
As the Government's Brexit appeal comes to the Supreme Court, here's a look at what you need to know.
According to local reports, the man was found by friends in their accommodation in Val Thorens resort in the Alps on Sunday morning.