The additional participation of Free French forces in the Syrian operation was controversial within Allied circles. It raised the prospect of Frenchmen shooting at Frenchmen and fears of a civil war. Additionally, it was believed that the Free French were widely reviled within Vichy military circles and that Vichy forces in Syria were less likely to resist the British if they were not accompanied by elements of the Free French. Nevertheless, de Gaulle convinced Churchill to allow his forces to participate, but de Gaulle was forced to agree to a joint British-Free French proclamation promising that Syria and Lebanon would become fully independent at the end of the war.