PARIS - France said on Wednesday it would take part in military air action against Islamic State militants in Iraq if necessary, but said that taking any military action against the group in Syria would be done under different "modalities.""In Iraq ... we will take part in military air action if necessary. The situation in Syria is different" he told students in a speech at the Sciences Po academy in Paris."Some in the media say France is ready to act in Iraq, but not Syria. No! We must act in both cases, but not with the same modalities."