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Memorial service held for IS victim Steven Sotloff

Nearly 1,000 mourners including relatives, friends and politicians, have attended a memorial service in Florida for US journalist Steven Sotloff, who was killed by IS militants.

The Islamic State released a video on Tuesday showing the murder of Mr Sotloff.

He is the second American journalist to be beheaded in two weeks over the group's confrontation with the US over air strikes in Iraq and its foreign policy.

Footage of James Foley being beheaded on August 19 shocked the world.

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Cameron to fellow leaders: Stop paying ransoms

David Cameron has said he will tonight warn fellow Nato leaders that they must halt ransom payments to terrorist kidnappers.

At a dinner for alliance leaders at the Nato summit in Wales, the Prime Minister will remind them of commitments they have made at the G8 to stop such payments.

He will warn that they simply fuel further terrorist violence, putting their own populations at risk.

"It is utterly self-defeating. It is worse than self-defeating, it is actually a risk to us back at home," Mr Cameron said shortly before the dinner.

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