BEIRUT (AP) — A new wave of airstrikes targeting the Syrian city of Raqqa, the headquarters of the extremist Islamic State group and the focus of an international military campaign, killed at least eight people on Friday, including five children, Syrian opposition groups said.The strikes came as France's foreign minister, Laurent Fabius, declared that destroying the IS headquarters and "neutralizing and eradicating" the extremist group is the main objective of the international campaign.It wasn't immediately clear who carried out the latest airstrikes.