If Israel strikes its nuclear bases, Iran will retaliate. That was the message from the leader of Lebanon’s Iranian-backed militant group Hezbollah Monday. Sayyed Hassan Nasrallah said that Iran could strike U.S. bases in the Middle East if Israel decides to attack any of its nuclear facilities. “A decision has been taken to respond and the response will be very great,” Nasrallah said. "The response will not be just inside the Israeli entity—American bases in the whole region could be Iranian targets. If Israel targets Iran, America bears responsibility."