French army Rafale fighter jets sit on the tarmac at a military base at an undisclosed location in the Gulf on November 17, 2015, as the French army conducts operations against the Islamic State group in Syria and Iraq. French warplanes destroyed a command centre and training centre in the Syrian city of Raqa, the stronghold of IS, in its second series of airstrikes in 24 hours, the French defence ministry said. AFP PHOTO / KARIM SAHIB (Photo credit should read KARIM SAHIB/AFP via Getty Images)
