DOHA Qatar has suspended its role as a key mediator for a Gaza ceasefire and hostage release deal until Hamas and Israel demonstrate "seriousness" in talks, the foreign ministry said Saturday. The Gulf emirate, which has hosted Hamas's political leadership since 2012 with U.S. blessing, has been involved in months of protracted diplomacy aimed at ending the war triggered by the Palestinian group's Oct. 7 attack on Israel. However, the talks, also mediated by Cairo and Washington, have