U.S. forces are holding three French nationals who were captured in Iraq fighting alongside insurgents loyal to terrorist kingpin Abu Musab al Zarqawi - a development that could complicate attempts to thaw relations between France and America. "I can confirm that we are aware of the existence of these three people of French nationality who are being held in Iraq," French Foreign Ministry spokesman Herve Ladsous told a press conference in Paris last week, in comments first reported by Reuters. The French fighters were detained by a U.S. patrol during fighting in the city of Fallujah last November, Ladsous explained....