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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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Britain may join US airstrikes 'sooner rather than later'

Britain is moving towards joining American airstrikes against IS "probably sooner rather than later", a defence expert has told Good Morning Britain.

Professor Michael Clarke, who heads the Royal United Services Institute, said British involvement in Iraq was "not inevitable" and that David Cameron was eager to avoid a repeat of last years vote on Syria.

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