ISTANBUL   Italian Foreign Minister Antonio Tajani signaled a list of EU tariffs worth €21 billion ($24 billion) in response to recently announced US tariffs unless a deal is reached. "A list of European tariffs worth €21 billion is ready, and a second could be added. I'm confident there will be progress. Tariffs harm everyone, starting with the United States," Tajani told daily Il Messaggero on Monday. He noted that a downturn in the stock market would put Americans' pensions and savings at