CARACAS — The United States on Thursday said opposition candidate Edmundo González defeated President Nicolás Maduro in Venezuela’s presidential election and called for negotiations to ensure a peaceful transition of power. Maduro claims that he won Sunday’s vote. The opposition, meanwhile, says that the government’s own records, as well as independent exit polls, indicate that González won twice as many as votes. “Given the overwhelming evidence, it is clear to the United States and, most...