War with Iran would be mother of all wars: Rouhani warns US

Warning the US against provoking Iran, President Hassan Rouhani has said that the conflict with the country would be "the mother of all wars". "Don't play with the lion's tail, this would only lead to regret," he further said. Adding that Iranians will only be "united" by further threats from the US, Rouhani said the country will "certainly defeat America".