Key TakeawaysTaco Bell sales help offset weakness in other Yum! Brands franchises, boosting shares of the company.Same-store sales at Taco Bell advanced 4%, while they dropped 4% at KFC and Pizza Hut.CEO David Gibbs said the fast-food restaurant chain's results were impacted by geopolitical conflicts and a weak consumer environment. Shares of Yum! Brands (YUM) advanced as the restaurant chain operator got a boost from its Taco Bell franchise. In the third quarter, Taco Bell same-store sales rose 4%. That h ...