The U.S. will deal with Iran “another way” if it does not reach a good deal with the Islamic Republic, U.S. Secretary of State Marco Rubio said on Monday, playing down hopes that an agreement is imminent. Following signals from Washington during the weekend that the U.S. and Iran could be nearing a framework agreement, oil prices plunged on Monday in Asian trade, with Brent Crude prices slipping below the $100 per barrel mark. However, losses were being contained at about 3-4% in the morning in Europe as the market hopes for a deal…