Pakistan is traversing minefields as it concludes agreements on investment, balance of payments support and delayed payment oil deliveries with Saudi Arabia and the United Arab Emirates worth USD$13 billion that are likely to fawn growing distrust in its relations with neighbouring Iran. Perhaps the most sensitive investment is likely to be a plan by Saudi national oil company Aramco to build a refinery in the Chinese-backed Baloch port of Gwadar close to both Pakistan’s border with Iran and the…