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.

View all 78 updates ›

Government 'should consider air strikes against IS'

The Government should consider targeted air strikes against Islamic State militants, a former First Sea Lord said.

Lord West, now a member of the National Security Strategy Committee, said the option of air strikes "should be on the table" following the threat to kill a British hostage.

He said the militants responsible for the deaths of James Foley and Steven Sotloff were effectively "dead men walking".

More on this story