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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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Air strikes 'could be part of wider strategy' against IS

Airstrikes in response to the kidnapping of a British citizen would be an "overreaction", a former senior member of the armed forces has told ITV News.

However, Major General Jonathan Shaw, a former assistant chief of defence staff, said engaging in such attacks may make up part of a wider strategy to tackle the threat of the Islamic State as a whole.

He added that the Government's response to the hostage threat would be "well-worn", and would not involve negotiating with kidnappers.

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