Venezuelan President Nicolás Maduro cancelled his debut at the United Nations General Assembly Wednesday, saying his enemies were plotting to incite violence in New York or even kill him. Just hours before he was scheduled to address the U.N., Maduro announced via Twitter that he had arrived back in Venezuela -- not New York -- after a six-day trip to China. During a national broadcast late Wednesday, Maduro said he was on a layover in Canada when he received information about two plots, one to incite violence and the other to kill him.