First it was off- and now it’s apparently on again. At the end of last month, under considerable pressure from some members of its own parliament, the Mongolian government said it would re-negotiate the Oyu Tolgoi agreement in order to increase its interest to 50%, in one of the world’s biggest copper-gold lodes. Not surprisingly, the Oyu Tolgoi partners, Ivanhoe Mines and Rio Tinto, bridled at the announcement. Now the Mongalian administration seems to have backed down. Meanwhile, the relationship between Ivanhoe and its leading shareholder, Rio Tinto, isn’t  exactly improving.