British FM : ` ` The time has come now for Iran ... to make some very tough decisions '' U.S. secretary of state says substantial progress has been made but important considerations remain . Iranian procedure for negotiating a general deal is easy , but figuring out the arrangements may be hard .
British FM : `` The time has come now for Iran ... to make some very tough decisions '' U.S. secretary of state says substantial progress has been made but important gaps remain . Iranian President says getting a general deal is easy , but ironing out the details may be hard .