DUBAI: Qatar has withdrawn as a key mediator for a Gaza ceasefire and hostage deal and warned Hamas that its Doha office "no longer serves its purpose", a diplomatic source told AFP on Saturday (Nov 9). Qatar, with the United Sates and Egypt, has been engaged in months of fruitless negotiations for a truce with a hostage and prisoner releases. "The Qataris informed both the Israelis and Hamas that as long as there is a refusal to negotiate a deal in good faith, they cannot continue to mediate,"