(CNN)Turkish President Recep Tayyip Erdogan -- delivering feisty and stirring messages on the one-year anniversary of a failed coup aimed at unseating him -- lauded the popular resistance that helped stop the coup, and promised to decapitate "traitors," a sign that his harsh crackdown against his foes over the last 12 months will continue. Speaking to hundreds of thousands of people at a massive ceremony on Saturday in Istanbul, Erdogan urged vigilance against lurking enemies and declared that last summer's bloody ordeal emboldened the nation. "If parliament passes a bill on resuming executions in Turkey., he said, "I will sign it." If Turkey does so it would likely scuttle its longtime effort to join the European Union, whose member countries have abolished the death penalty. The country has remained in a state of emergency while allowing Erdogan to tighten his grip on power and oversee a massive purge of those who he says rose up against him.