Complex sentence: On 7 September 2015, Prime Minister David Cameron revealed that two Islamic State fighters from Britain had been killed in an intelligence-led strike by an RAF Reaper near Raqqa, Syria; the first armed use of RAF assets in Syria during the civil war.
Split into simpler sentences: On 7 September 2015, Prime Minister David Cameron revealed that two Islamic State fighters from Britain had been killed in an intelligence-led strike by an RAF Reaper near Raqqa, Syria. This was the first armed use of RAF assets in Syria during the current civil war.