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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 vows to 'put the squeeze' on Islamic State

David Cameron has vowed to "put the squeeze" on Islamic State - but has yet to commit to joining US airstrikes against the militant group.

ITV News Political Editor Tom Bradby reports from south Wales, where world leaders are now discussing their approach to the group that has sent shockwaves around the world.

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