[caption id="attachment_118441" align="alignright" width="214"] A portrait of mountain guide of Frenchman Herve Gourdel hangs near a French flag outside the town hall in Saint-Martin-Vesubie, September 24, 2014.CREDIT: REUTERS/PATRICE MASSANTE[/caption] (Reuters) - France on Thursday opened the door to possibly joining air strikes in Syria just hours ...